Find the set if the universal set U= (-8, -3, -1, 0, 2, 4, 5, 6, 7, 9), A (-8, -3, -1, 2, 5), B = (-3, 2, 5, 7), and C = (-1,4,9). (AUB)' O (0, 4, 6, 9) (-8, -3, -1, 2, 5, 7) (-8,-1, 4, 6, 9) (4, 6, 9) Question 44 Answer the question. Consider the numbers-17.-√76, 956,-√4.5.9. Which are irrational numbers? O√4.5.9 0-√76 O√√76.√√4 956, -17, 5.9.

Answers

Answer 1

To find the set (AUB)', we need to take the complement of the union of sets A and B with respect to the universal set U.
The union of sets A and B is AUB = (-8, -3, -1, 2, 5, 7).
Taking the complement of AUB with respect to U, we have (AUB)' = U - (AUB) = (-8, -3, -1, 0, 4, 6, 9).
Therefore, the set (AUB)' is (-8, -3, -1, 0, 4, 6, 9).

The correct answer is (c) (-8, -1, 4, 6, 9).
Regarding the numbers -17, -√76, 956, -√4.5.9, the irrational numbers are -√76 and -√4.5.9.
The correct answer is (b) -√76.

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Related Questions

The answer above is NOT correct. Find the orthogonal projection of onto the subspace W of R4 spanned by -1632 -2004 projw(v) = 10284 -36 v = -1 -16] -4 12 16 and 4 5 -26

Answers

Therefore, the orthogonal projection of v onto the subspace W is approximately (-32.27, -64.57, -103.89, -16.71).

To find the orthogonal projection of vector v onto the subspace W spanned by the given vectors, we can use the formula:

projₓy = (y⋅x / ||x||²) * x

where x represents the vectors spanning the subspace, y represents the vector we want to project, and ⋅ denotes the dot product.

Let's calculate the orthogonal projection:

Step 1: Normalize the spanning vectors.

First, we normalize the spanning vectors of W:

u₁ = (-1/√6, -2/√6, -3/√6, -2/√6)

u₂ = (4/√53, 5/√53, -26/√53)

Step 2: Calculate the dot product.

Next, we calculate the dot product of the vector we want to project, v, with the normalized spanning vectors:

v⋅u₁ = (-1)(-1/√6) + (-16)(-2/√6) + (-4)(-3/√6) + (12)(-2/√6)

= 1/√6 + 32/√6 + 12/√6 - 24/√6

= 21/√6

v⋅u₂ = (-1)(4/√53) + (-16)(5/√53) + (-4)(-26/√53) + (12)(0/√53)

= -4/√53 - 80/√53 + 104/√53 + 0

= 20/√53

Step 3: Calculate the projection.

Finally, we calculate the orthogonal projection of v onto the subspace W:

projW(v) = (v⋅u₁) * u₁ + (v⋅u₂) * u₂

= (21/√6) * (-1/√6, -2/√6, -3/√6, -2/√6) + (20/√53) * (4/√53, 5/√53, -26/√53)

= (-21/6, -42/6, -63/6, -42/6) + (80/53, 100/53, -520/53)

= (-21/6 + 80/53, -42/6 + 100/53, -63/6 - 520/53, -42/6)

= (-10284/318, -20544/318, -33036/318, -5304/318)

≈ (-32.27, -64.57, -103.89, -16.71)

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A sample of size n-58 is drawn from a normal population whose standard deviation is a 5.5. The sample mean is x = 36.03. Part 1 of 2 (a) Construct a 98% confidence interval for μ. Round the answer to at least two decimal places. A 98% confidence interval for the mean is 1000 ala Part 2 of 2 (b) If the population were not approximately normal, would the confidence interval constructed in part (a) be valid? Explain. The confidence interval constructed in part (a) (Choose one) be valid since the sample size (Choose one) large. would would not DE

Answers

a. To construct a 98% confidence interval for the population mean (μ), we can use the formula:

x ± Z * (σ / √n),

where x is the sample mean, Z is the critical value corresponding to the desired confidence level, σ is the population standard deviation, and n is the sample size.

Plugging in the given values, we have:

x = 36.03, σ = 5.5, n = 58, and the critical value Z can be determined using the standard normal distribution table for a 98% confidence level (Z = 2.33).

Calculating the confidence interval using the formula, we find:

36.03 ± 2.33 * (5.5 / √58).

The resulting interval provides a range within which we can be 98% confident that the population mean falls.

b. The validity of the confidence interval constructed in part (a) relies on the assumption that the population is approximately normal. If the population is not approximately normal, the validity of the confidence interval may be compromised.

The validity of the confidence interval is contingent upon meeting certain assumptions, including a normal distribution for the population. If the population deviates significantly from normality, the confidence interval may not accurately capture the true population mean.

Therefore, it is crucial to assess the underlying distribution of the population before relying on the validity of the constructed confidence interval.

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For each series, state if it is arithmetic or geometric. Then state the common difference/common ratio For a), find S30 and for b), find S4 Keep all values in rational form where necessary. 2 a) + ²5 + 1² + 1/35+ b) -100-20-4- 15 15

Answers

a) The series is geometric. The common ratio can be found by dividing any term by the previous term. Here, the common ratio is 1/2 since each term is obtained by multiplying the previous term by 1/2.

b) The series is arithmetic. The common difference can be found by subtracting any term from the previous term. Here, the common difference is -20 since each term is obtained by subtracting 20 from the previous term.

To find the sum of the first 30 terms of series (a), we can use the formula for the sum of a geometric series:

Sₙ = a * (1 - rⁿ) / (1 - r)

Substituting the given values, we have:

S₃₀ = 2 * (1 - (1/2)³⁰) / (1 - (1/2))

Simplifying the expression, we get:

S₃₀ = 2 * (1 - (1/2)³⁰) / (1/2)

To find the sum of the first 4 terms of series (b), we can use the formula for the sum of an arithmetic series:

Sₙ = (n/2) * (2a + (n-1)d)

Substituting the given values, we have:

S₄ = (4/2) * (-100 + (-100 + (4-1)(-20)))

Simplifying the expression, we get:

S₄ = (2) * (-100 + (-100 + 3(-20)))

Please note that the exact values of S₃₀ and S₄ cannot be determined without the specific terms of the series.

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Consider this function.

f(x) = |x – 4| + 6

If the domain is restricted to the portion of the graph with a positive slope, how are the domain and range of the function and its inverse related?

Answers

The domain of the inverse function will be y ≥ 6, and the range of the inverse function will be x > 4.

When the domain is restricted to the portion of the graph with a positive slope, it means that only the values of x that result in a positive slope will be considered.

In the given function, f(x) = |x – 4| + 6, the portion of the graph with a positive slope occurs when x > 4. Therefore, the domain of the function is x > 4.

The range of the function can be determined by analyzing the behavior of the absolute value function. Since the expression inside the absolute value is x - 4, the minimum value the absolute value can be is 0 when x = 4.

As x increases, the value of the absolute value function increases as well. Thus, the range of the function is y ≥ 6, because the lowest value the function can take is 6 when x = 4.

Now, let's consider the inverse function. The inverse of the function swaps the roles of x and y. Therefore, the domain and range of the inverse function will be the range and domain of the original function, respectively.

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Given a space curve a: 1 = [0,2m] R³, such that a )= a), then a(t) is.. A. a closed B. simple C. regular 2. The torsion of a plane curve equals........ A. 1 B.0 C. not a constant 3. Given a metric matrix guy, then the inverse element g¹¹equals .......... A. 222 0 D. - 921 B. 212 C. 911 9 4. The vector S=N, x T is called........ of a curve a lies on a surface M. A. Principal normal B. intrinsic normal C. binormal my D. principal tangent hr 5. The second fundamental form is calculated using......... A. (X₁, X₂) B. (X₁, Xij) C.(N, Xij) D. (T,X) 6. The pla curve D. not simple D. -1

Answers

II(X, Y) = -dN(X)Y, where N is the unit normal vector of the surface.6. The plane curve D.

1. Given a space curve a: 1 = [0,2m] R³, such that a )= a), then a(t) is simple.

The curve a(t) is simple because it doesn't intersect itself at any point and doesn't have any loops. It is a curve that passes through distinct points, and it is unambiguous.

2. The torsion of a plane curve equals not a constant. The torsion of a plane curve is not a constant because it depends on the curvature of the plane curve. Torsion is defined as a measure of the degree to which a curve deviates from being planar as it moves along its path.

3. Given a metric matrix guy, then the inverse element g¹¹ equals 212.

The inverse of the matrix is calculated using the formula:

                    g¹¹ = 1 / |g| (g22g33 - g23g32) 2g13g32 - g12g33) (g12g23 - g22g13)

                                  |g| where |g| = g11(g22g33 - g23g32) - g21(2g13g32 - g12g33) + g31(g12g23 - g22g13)4.

The vector S=N x T is called binormal of a curve a lies on a surface M.

The vector S=N x T is called binormal of a curve a lies on a surface M.

It is a vector perpendicular to the plane of the curve that points in the direction of the curvature of the curve.5.

The second fundamental form is calculated using (N, Xij).

The second fundamental form is a measure of the curvature of a surface in the direction of its normal vector.

It is calculated using the dot product of the surface's normal vector and its second-order partial derivatives.

It is given as: II(X, Y) = -dN(X)Y, where N is the unit normal vector of the surface.6. The plane curve D. not simple is the correct answer to the given problem.

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Differentiate the following function. y = O (x-3)* > O (x-3)e* +8 O(x-3)x4 ex None of the above answers D Question 2 Differentiate the following function. y = x³ex O y'= (x³ + 3x²)e* Oy' = (x³ + 3x²)e²x O y'= (2x³ + 3x²)ex None of the above answers. Question 3 Differentiate the following function. y = √√x³ + 4 O 3x² 2(x + 4)¹/3 o'y' = 2x³ 2(x+4)¹/2 3x² 2(x³ + 4)¹/2 O None of the above answers Question 4 Find the derivative of the following function." y = 24x O y' = 24x+2 In2 Oy² = 4x+² In 2 Oy' = 24x+2 en 2 None of the above answers.

Answers

The first three questions involve differentiating given functions.  Question 1 - None of the above answers; Question 2 - y' = (x³ + 3x²)e*; Question 3 - None of the above answers. Question 4 asks for the derivative of y = 24x, and the correct answer is y' = 24.

Question 1: The given function is y = O (x-3)* > O (x-3)e* +8 O(x-3)x4 ex. The notation used is unclear, so it is difficult to determine the correct differentiation. However, none of the provided options seem to match the given function, so the answer is "None of the above answers."

Question 2: The given function is y = x³ex. To find its derivative, we apply the product rule and the chain rule. Using the product rule, we differentiate the terms separately and combine them. The derivative of x³ is 3x², and the derivative of ex is ex. Thus, the derivative of the given function is y' = (x³ + 3x²)e*.

Question 3: The given function is y = √√x³ + 4. To differentiate this function, we apply the chain rule. The derivative of √√x³ + 4 can be found by differentiating the inner function, which is x³ + 4. The derivative of x³ + 4 is 3x², and applying the chain rule, the derivative of √√x³ + 4 becomes 3x² * 2(x + 4)¹/2. Thus, the correct answer is "3x² * 2(x + 4)¹/2."

Question 4: The given function is y = 24x. To find its derivative, we differentiate it with respect to x. The derivative of 24x is simply 24, as the derivative of a constant multiplied by x is the constant. Therefore, the correct answer is y' = 24.

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Find a power series for the function, centered at c, and determine the interval of convergence. 2 a) f(x) = 7²-3; c=5 b) f(x) = 2x² +3² ; c=0 7x+3 4x-7 14x +38 c) f(x)=- d) f(x)=- ; c=3 2x² + 3x-2' 6x +31x+35

Answers

We are required to determine the power series for the given functions centered at c and determine the interval of convergence for each function.

a) f(x) = 7²-3; c=5

Here, we can write 7²-3 as 48.

So, we have to find the power series of 48 centered at 5.

The power series for any constant is the constant itself.

So, the power series for 48 is 48 itself.

The interval of convergence is also the point at which the series converges, which is only at x = 5.

Hence the interval of convergence for the given function is [5, 5].

b) f(x) = 2x² +3² ; c=0

Here, we can write 3² as 9.

So, we have to find the power series of 2x²+9 centered at 0.

Using the power series for x², we can write the power series for 2x² as 2x² = 2(x^2).

Now, the power series for 2x²+9 is 2(x^2) + 9.

For the interval of convergence, we can find the radius of convergence R using the formula:

`R= 1/lim n→∞|an/a{n+1}|`,

where an = 2ⁿ/n!

Using this formula, we can find that the radius of convergence is ∞.

Hence the interval of convergence for the given function is (-∞, ∞).c) f(x)=- d) f(x)=- ; c=3

Here, the functions are constant and equal to 0.

So, the power series for both functions would be 0 only.

For both functions, since the power series is 0, the interval of convergence would be the point at which the series converges, which is only at x = 3.

Hence the interval of convergence for both functions is [3, 3].

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Installment Loan
How much of the first
$5000.00
payment for the
installment loan
5 years
12% shown in the table will
go towards interest?
Principal
Term Length
Interest Rate
Monthly Payment $111.00
A. $50.00
C. $65.00
B. $40.00
D. $61.00

Answers

The amount out of the first $ 111 payment that will go towards interest would be A. $ 50. 00.

How to find the interest portion ?

For an installment loan, the first payment is mostly used to pay off the interest. The interest portion of the loan payment can be calculated using the formula:

Interest = Principal x Interest rate / Number of payments per year

Given the information:

Principal is $5000

the Interest rate is 12% per year

number of payments per year is 12

The interest is therefore :

= 5, 000 x 0. 12 / 12 months

= $ 50

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In the problem of the 3-D harmonic oscillator, do the step of finding the recurrence relation for the coefficients of d²u the power series solution. That is, for the equation: p + (2l + 2-2p²) + (x − 3 − 2l) pu = 0, try a dp² du dp power series solution of the form u = Σk akp and find the recurrence relation for the coefficients.

Answers

The recurrence relation relates the coefficients ak, ak+1, and ak+2 for each value of k is (2k(k-1) + 1)ak + (2l + 2 - 2(k+1)²) * ak+1 + (x - 3 - 2l) * ak+2 = 0.

To find the recurrence relation for the coefficients of the power series solution, let's substitute the power series form into the differential equation and equate the coefficients of like powers of p.

Given the equation: p + (2l + 2 - 2p²) + (x - 3 - 2l) pu = 0

Let's assume the power series solution takes the form: u = Σk akp

Differentiating u with respect to p twice, we have:

d²u/dp² = Σk ak * d²pⁿ/dp²

The second derivative of p raised to the power n with respect to p can be calculated as follows:

d²pⁿ/dp² = n(n-1)p^(n-2)

Substituting this back into the expression for d²u/dp², we have:

d²u/dp² = Σk ak * n(n-1)p^(n-2)

Now let's substitute this expression for d²u/dp² and the power series form of u into the differential equation:

p + (2l + 2 - 2p²) + (x - 3 - 2l) * p * Σk akp = 0

Expanding and collecting like powers of p, we get:

Σk [(2k(k-1) + 1)ak + (2l + 2 - 2(k+1)²) * ak+1 + (x - 3 - 2l) * ak+2] * p^k = 0

Since the coefficient of each power of p must be zero, we obtain a recurrence relation for the coefficients:

(2k(k-1) + 1)ak + (2l + 2 - 2(k+1)²) * ak+1 + (x - 3 - 2l) * ak+2 = 0

This recurrence relation relates the coefficients ak, ak+1, and ak+2 for each value of k.

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Look at the pic dhehdtdjdheh

Answers

The probability that a seventh grader chosen at random will play an instrument other than the drum is given as follows:

72%.

How to calculate a probability?

The parameters that are needed to calculate a probability are listed as follows:

Number of desired outcomes in the context of a problem or experiment.Number of total outcomes in the context of a problem or experiment.

Then the probability is calculated as the division of the number of desired outcomes by the number of total outcomes.

The total number of seventh graders in this problem is given as follows:

8 + 3 + 8 + 10 = 29.

8 play the drum, hence the probability that a seventh grader chosen at random will play an instrument other than the drum is given as follows:

(29 - 8)/29 = 72%.

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Fill the blanks to write general solution for a linear systems whose augmented matrices was reduce to -3 0 0 3 0 6 2 0 6 0 8 0 -1 <-5 0 -7 0 0 0 3 9 0 0 0 0 0 General solution: +e( 0 0 0 0 20 pts

Answers

The general solution is:+e(13 - e3 + e4  e5  -3e6 - 3e7  e8  e9)

we have a unique solution, and the general solution is given by:

x1 = 13 - e3 + e4x2 = e5x3 = -3e6 - 3e7x4 = e8x5 = e9

where e3, e4, e5, e6, e7, e8, and e9 are arbitrary parameters.

To fill the blanks and write the general solution for a linear system whose augmented matrices were reduced to

-3 0 0 3 0 6 2 0 6 0 8 0 -1 -5 0 -7 0 0 0 3 9 0 0 0 0 0,

we need to use the technique of the Gauss-Jordan elimination method. The general solution of the linear system is obtained by setting all the leading variables (variables in the pivot positions) to arbitrary parameters and expressing the non-leading variables in terms of these parameters.

The rank of the coefficient matrix is also calculated to determine the existence of the solution to the linear system.

In the given matrix, we have 5 leading variables, which are the pivots in the first, second, third, seventh, and ninth columns.

So we need 5 parameters, one for each leading variable, to write the general solution.

We get rid of the coefficients below and above the leading variables by performing elementary row operations on the augmented matrix and the result is given below.

-3 0 0 3 0 6 2 0 6 0 8 0 -1 -5 0 -7 0 0 0 3 9 0 0 0 0 0

Adding 2 times row 1 to row 3 and adding 5 times row 1 to row 2, we get

-3 0 0 3 0 6 2 0 0 0 3 0 -1 10 0 -7 0 0 0 3 9 0 0 0 0 0

Dividing row 1 by -3 and adding 7 times row 1 to row 4, we get

1 0 0 -1 0 -2 -2 0 0 0 -1 0 1 -10 0 7 0 0 0 -3 -9 0 0 0 0 0

Adding 2 times row 5 to row 6 and dividing row 5 by -3,

we get1 0 0 -1 0 -2 0 0 0 0 1 0 -1 10 0 7 0 0 0 -3 -9 0 0 0 0 0

Dividing row 3 by 3 and adding row 3 to row 2, we get

1 0 0 -1 0 0 0 0 0 0 1 0 -1 10 0 7 0 0 0 -3 -3 0 0 0 0 0

Adding 3 times row 3 to row 1,

we get

1 0 0 0 0 0 0 0 0 0 1 0 -1 13 0 7 0 0 0 -3 -3 0 0 0 0 0

So, we see that the rank of the coefficient matrix is 5, which is equal to the number of leading variables.

Thus, we have a unique solution, and the general solution is given by:

x1 = 13 - e3 + e4x2 = e5x3 = -3e6 - 3e7x4 = e8x5 = e9

where e3, e4, e5, e6, e7, e8, and e9 are arbitrary parameters.

Hence, the general solution is:+e(13 - e3 + e4  e5  -3e6 - 3e7  e8  e9)

The general solution is:+e(13 - e3 + e4  e5  -3e6 - 3e7  e8  e9)

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Find f'(x) for f'(x) = f(x) = (x² + 1) sec(x)

Answers

Given, f'(x) = f(x)

= (x² + 1)sec(x).

To find the derivative of the given function, we use the product rule of derivatives

Where the first function is (x² + 1) and the second function is sec(x).

By using the product rule of differentiation, we get:

f'(x) = (x² + 1) * d(sec(x)) / dx + sec(x) * d(x² + 1) / dx

The derivative of sec(x) is given as,

d(sec(x)) / dx = sec(x)tan(x).

Differentiating (x² + 1) w.r.t. x gives d(x² + 1) / dx = 2x.

Substituting the values in the above formula, we get:

f'(x) = (x² + 1) * sec(x)tan(x) + sec(x) * 2x

= sec(x) * (tan(x) * (x² + 1) + 2x)

Therefore, the derivative of the given function f'(x) is,

f'(x) = sec(x) * (tan(x) * (x² + 1) + 2x).

Hence, the answer is that

f'(x) = sec(x) * (tan(x) * (x² + 1) + 2x)

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Use the formula for the amount, A=P(1+rt), to find the indicated quantity Where. A is the amount P is the principal r is the annual simple interest rate (written as a decimal) It is the time in years P=$3,900, r=8%, t=1 year, A=? A=$(Type an integer or a decimal.)

Answers

The amount (A) after one year is $4,212.00

Given that P = $3,900,

r = 8% and

t = 1 year,

we need to find the amount using the formula A = P(1 + rt).

To find the value of A, substitute the given values of P, r, and t into the formula

A = P(1 + rt).

A = P(1 + rt)

A = $3,900 (1 + 0.08 × 1)

A = $3,900 (1 + 0.08)

A = $3,900 (1.08)A = $4,212.00

Therefore, the amount (A) after one year is $4,212.00. Hence, the detail ans is:A = $4,212.00.

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Summer Rental Lynn and Judy are pooling their savings to rent a cottage in Maine for a week this summer. The rental cost is $950. Lynn’s family is joining them, so she is paying a larger part of the cost. Her share of the cost is $250 less than twice Judy’s. How much of the rental fee is each of them paying?

Answers

Lynn is paying $550 and Judy is paying $400 for the cottage rental in Maine this summer.

To find out how much of the rental fee Lynn and Judy are paying, we have to create an equation that shows the relationship between the variables in the problem.

Let L be Lynn's share of the cost, and J be Judy's share of the cost.

Then we can translate the given information into the following system of equations:

L + J = 950 (since they are pooling their savings to pay the $950 rental cost)

L = 2J - 250 (since Lynn is paying $250 less than twice Judy's share)

To solve this system, we can use substitution.

We'll solve the second equation for J and then substitute that expression into the first equation:

L = 2J - 250

L + 250 = 2J

L/2 + 125 = J

Now we can substitute that expression for J into the first equation and solve for L:

L + J = 950

L + L/2 + 125 = 950

3L/2 = 825L = 550

So, Lynn is paying $550 and Judy is paying $400.

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In solving the beam equation, you determined that the general solution is 1 y v=ối 791-x-³ +x. Given that y''(1) = 3 determine 9₁

Answers

Given that y''(1) = 3, determine the value of 9₁.

In order to solve for 9₁ given that y''(1) = 3,

we need to start by differentiating y(x) twice with respect to x.

y(x) = c₁(x-1)³ + c₂(x-1)

where c₁ and c₂ are constantsTaking the first derivative of y(x), we get:

y'(x) = 3c₁(x-1)² + c₂

Taking the second derivative of y(x), we get:

y''(x) = 6c₁(x-1)

Let's substitute x = 1 in the expression for y''(x):

y''(1) = 6c₁(1-1)y''(1)

= 0

However, we're given that y''(1) = 3.

This is a contradiction.

Therefore, there is no value of 9₁ that satisfies the given conditions.

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Select the correct answer.
Which of the following represents a factor from the expression given?
5(3x² +9x) -14
O 15x²
O5
O45x
O 70

Answers

The factor from the expression 5(3x² + 9x) - 14 is not listed among the options you provided. However, I can help you simplify the expression and identify the factors within it.

To simplify the expression, we can distribute the 5 to both terms inside the parentheses:

5(3x² + 9x) - 14 = 15x² + 45x - 14

From this simplified expression, we can identify the factors as follows:

15x²: This represents the term with the variable x squared.

45x: This represents the term with the variable x.

-14: This represents the constant term.

Therefore, the factors from the expression are 15x², 45x, and -14.

Classroom Assignment Name Date Solve the problem. 1) 1) A projectile is thrown upward so that its distance above the ground after t seconds is h=-1212 + 360t. After how many seconds does it reach its maximum height? 2) The number of mosquitoes M(x), in millions, in a certain area depends on the June rainfall 2) x, in inches: M(x) = 4x-x2. What rainfall produces the maximum number of mosquitoes? 3) The cost in millions of dollars for a company to manufacture x thousand automobiles is 3) given by the function C(x)=3x2-24x + 144. Find the number of automobiles that must be produced to minimize the cost. 4) The profit that the vendor makes per day by selling x pretzels is given by the function P(x) = -0.004x² +2.4x - 350. Find the number of pretzels that must be sold to maximize profit.

Answers

The projectile reaches its height after 30 seconds, 2 inches of rainfall produces number of mosquitoes, 4 thousand automobiles needed to minimize cost, and 300 pretzels must be sold to maximize profit.

To find the time it takes for the projectile to reach its maximum height, we need to determine the time at which the velocity becomes zero. Since the projectile is thrown upward, the initial velocity is positive and the acceleration is negative due to gravity. The velocity function is v(t) = h'(t) = 360 - 12t. Setting v(t) = 0 and solving for t, we get 360 - 12t = 0. Solving this equation, we find t = 30 seconds. Therefore, the projectile reaches its maximum height after 30 seconds.To find the rainfall that produces the maximum number of mosquitoes, we need to maximize the function M(x) = 4x - x^2. Since this is a quadratic function, we can find the maximum by determining the vertex. The x-coordinate of the vertex can be found using the formula x = -b/(2a), where a = -1 and b = 4. Plugging these values into the formula, we get x = -4/(2*(-1)) = 2 inches of rainfall. Therefore, 2 inches of rainfall produces the maximum number of mosquitoes.

To minimize the cost of manufacturing automobiles, we need to find the number of automobiles that minimizes the cost function C(x) = 3x^2 - 24x + 144. Since this is a quadratic function, the minimum occurs at the vertex. The x-coordinate of the vertex can be found using the formula x = -b/(2a), where a = 3 and b = -24. Plugging these values into the formula, we get x = -(-24)/(2*3) = 4 thousand automobiles. Therefore, 4 thousand automobiles must be produced to minimize the cost.

To maximize the profit from selling pretzels, we need to find the number of pretzels that maximizes the profit function P(x) = -0.004x^2 + 2.4x - 350. Since this is a quadratic function, the maximum occurs at the vertex. The x-coordinate of the vertex can be found using the formula x = -b/(2a), where a = -0.004 and b = 2.4. Plugging these values into the formula, we get x = -2.4/(2*(-0.004)) = 300 pretzels. Therefore, 300 pretzels must be sold to maximize the profit.

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Find a general solution to the differential equation. 1 31 +4y=2 tan 4t 2 2 The general solution is y(t) = C₁ cos (41) + C₂ sin (41) - 25 31 e -IN Question 4, 4.6.17 GEXCES 1 In sec (4t)+ tan (41) cos (41) 2 < Jona HW Sc Poi Find a general solution to the differential equation. 1 3t y"+2y=2 tan 2t- e 2 3t The general solution is y(t) = C₁ cos 2t + C₂ sin 2t - e 26 1 In |sec 2t + tan 2t| cos 2t. --

Answers

The general solution to the given differential equation is y(t) = [tex]C_{1}\ cos{2t}\ + C_{2} \ sin{2t} - e^{2/3t}[/tex], where C₁ and C₂ are constants.

The given differential equation is a second-order linear homogeneous equation with constant coefficients. Its characteristic equation is [tex]r^2[/tex] + 2 = 0, which has complex roots r = ±i√2. Since the roots are complex, the general solution will involve trigonometric functions.

Let's assume the solution has the form y(t) = [tex]e^{rt}[/tex]. Substituting this into the differential equation, we get [tex]r^2e^{rt} + 2e^{rt} = 0[/tex]. Dividing both sides by [tex]e^{rt}[/tex], we obtain the characteristic equation [tex]r^2[/tex] + 2 = 0.

The complex roots of the characteristic equation are r = ±i√2. Using Euler's formula, we can rewrite these roots as r₁ = i√2 and r₂ = -i√2. The general solution for the homogeneous equation is y_h(t) = [tex]C_{1}e^{r_{1} t} + C_{2}e^{r_{2}t}[/tex]

Next, we need to find the particular solution for the given non-homogeneous equation. The non-homogeneous term includes a tangent function and an exponential term. We can use the method of undetermined coefficients to find a particular solution. Assuming y_p(t) has the form [tex]A \tan{2t} + Be^{2/3t}[/tex], we substitute it into the differential equation and solve for the coefficients A and B.

After finding the particular solution, we can add it to the general solution of the homogeneous equation to obtain the general solution of the non-homogeneous equation: y(t) = y_h(t) + y_p(t). Simplifying the expression, we arrive at the general solution y(t) = C₁ cos(2t) + C₂ sin(2t) - [tex]e^{2/3t}[/tex], where C₁ and C₂ are arbitrary constants determined by initial conditions or boundary conditions.

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The marginal revenue (in thousands of dollars) from the sale of x gadgets is given by the following function. 2 3 R'(x) = )= 4x(x² +26,000) (a) Find the total revenue function if the revenue from 120 gadgets is $15,879. (b) How many gadgets must be sold for a revenue of at least $45,000?

Answers

To find the total revenue function, we need to integrate the marginal revenue function R'(x) with respect to x.

(a) Total Revenue Function:

We integrate R'(x) = 4x(x² + 26,000) with respect to x:

R(x) = ∫[4x(x² + 26,000)] dx

Expanding and integrating, we get:

R(x) = ∫[4x³ + 104,000x] dx

= x⁴ + 52,000x² + C

Now we can use the given information to find the value of the constant C. We are told that the revenue from 120 gadgets is $15,879, so we can set up the equation:

R(120) = 15,879

Substituting x = 120 into the total revenue function:

120⁴ + 52,000(120)² + C = 15,879

Solving for C:

207,360,000 + 748,800,000 + C = 15,879

C = -955,227,879

Therefore, the total revenue function is:

R(x) = x⁴ + 52,000x² - 955,227,879

(b) Revenue of at least $45,000:

To find the number of gadgets that must be sold for a revenue of at least $45,000, we can set up the inequality:

R(x) ≥ 45,000

Using the total revenue function R(x) = x⁴ + 52,000x² - 955,227,879, we have:

x⁴ + 52,000x² - 955,227,879 ≥ 45,000

We can solve this inequality numerically to find the values of x that satisfy it. Using a graphing calculator or software, we can determine that the solutions are approximately x ≥ 103.5 or x ≤ -103.5. However, since the number of gadgets cannot be negative, the number of gadgets that must be sold for a revenue of at least $45,000 is x ≥ 103.5.

Therefore, at least 104 gadgets must be sold for a revenue of at least $45,000.

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A rumor spreads in a college dormitory according to the model dR R = 0.5R (1- - dt 120 where t is time in hours. Only 2 people knew the rumor to start with. Using the Improved Euler's method approximate how many people in the dormitory have heard the rumor after 3 hours using a step size of 1?

Answers

The number of people who have heard the rumor after 3 hours of using Improved Euler's method with a step size of 1 is R(3).  

The Improved Euler's method is a numerical approximation technique used to solve differential equations. It involves taking small steps and updating the solution at each step based on the slope at that point.

To approximate the number of people who have heard the rumor after 3 hours, we start with the initial condition R(0) = 2 (since only 2 people knew the rumor to start with) and use the Improved Euler's method with a step size of 1.

Let's perform the calculation step by step:

At t = 0, R(0) = 2 (given initial condition)

Using the Improved Euler's method:

k1 = 0.5 * R(0) * (1 - R(0)/120) = 0.5 * 2 * (1 - 2/120) = 0.0167

k2 = 0.5 * (R(0) + 1 * k1) * (1 - (R(0) + 1 * k1)/120) = 0.5 * (2 + 1 * 0.0167) * (1 - (2 + 1 * 0.0167)/120) = 0.0166

Approximate value of R(1) = R(0) + 1 * k2 = 2 + 1 * 0.0166 = 2.0166

Similarly, we can continue this process for t = 2, 3, and so on.

For t = 3, the approximate value of R(3) represents the number of people who have heard the rumor after 3 hours.

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Maximize p = 3x + 3y + 3z + 3w+ 3v subject to x + y ≤ 3 y + z ≤ 6 z + w ≤ 9 w + v ≤ 12 x ≥ 0, y ≥ 0, z ≥ 0, w z 0, v ≥ 0. P = 3 X (x, y, z, w, v) = 0,21,0,24,0 x × ) Submit Answer

Answers

To maximize the objective function p = 3x + 3y + 3z + 3w + 3v, subject to the given constraints, we can use linear programming techniques. The solution involves finding the corner point of the feasible region that maximizes the objective function.

The given problem can be formulated as a linear programming problem with the objective function p = 3x + 3y + 3z + 3w + 3v and the following constraints:

1. x + y ≤ 3

2. y + z ≤ 6

3. z + w ≤ 9

4. w + v ≤ 12

5. x ≥ 0, y ≥ 0, z ≥ 0, w ≥ 0, v ≥ 0

To find the maximum value of p, we need to identify the corner points of the feasible region defined by these constraints. We can solve the system of inequalities to determine the feasible region.

Given the point (x, y, z, w, v) = (0, 21, 0, 24, 0), we can substitute these values into the objective function p to obtain:

p = 3(0) + 3(21) + 3(0) + 3(24) + 3(0) = 3(21 + 24) = 3(45) = 135.

Therefore, at the point (0, 21, 0, 24, 0), the value of p is 135.

Please note that the solution provided is specific to the given point (0, 21, 0, 24, 0), and it is necessary to evaluate the objective function at all corner points of the feasible region to identify the maximum value of p.

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Find a power series for the function, centered at c, and determine the interval of convergence. 2 a) f(x) = 7²-3; c=5 b) f(x) = 2x² +3² ; c=0 7x+3 4x-7 14x +38 c) f(x)=- d) f(x)=- ; c=3 2x² + 3x-2' 6x +31x+35

Answers

a) For the function f(x) = 7²-3, centered at c = 5, we can find the power series representation by expanding the function into a Taylor series around x = c.

First, let's find the derivatives of the function:

f(x) = 7x² - 3

f'(x) = 14x

f''(x) = 14

Now, let's evaluate the derivatives at x = c = 5:

f(5) = 7(5)² - 3 = 172

f'(5) = 14(5) = 70

f''(5) = 14

The power series representation centered at c = 5 can be written as:

f(x) = f(5) + f'(5)(x - 5) + (f''(5)/2!)(x - 5)² + ...

Substituting the evaluated derivatives:

f(x) = 172 + 70(x - 5) + (14/2!)(x - 5)² + ...

b) For the function f(x) = 2x² + 3², centered at c = 0, we can follow the same process to find the power series representation.

First, let's find the derivatives of the function:

f(x) = 2x² + 9

f'(x) = 4x

f''(x) = 4

Now, let's evaluate the derivatives at x = c = 0:

f(0) = 9

f'(0) = 0

f''(0) = 4

The power series representation centered at c = 0 can be written as:

f(x) = f(0) + f'(0)x + (f''(0)/2!)x² + ...

Substituting the evaluated derivatives:

f(x) = 9 + 0x + (4/2!)x² + ...

c) The provided function f(x)=- does not have a specific form. Could you please provide the expression for the function so I can assist you further in finding the power series representation?

d) Similarly, for the function f(x)=- , centered at c = 3, we need the expression for the function in order to find the power series representation. Please provide the function expression, and I'll be happy to help you with the power series and interval of convergence.

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ind the differential dy. y=ex/2 dy = (b) Evaluate dy for the given values of x and dx. x = 0, dx = 0.05 dy Need Help? MY NOTES 27. [-/1 Points] DETAILS SCALCET9 3.10.033. Use a linear approximation (or differentials) to estimate the given number. (Round your answer to five decimal places.) √/28 ASK YOUR TEACHER PRACTICE ANOTHER

Answers

a) dy = (1/4) ex dx

b) the differential dy is 0.0125 when x = 0 and dx = 0.05.

To find the differential dy, given the function y=ex/2, we can use the following formula:

dy = (dy/dx) dx

We need to differentiate the given function with respect to x to find dy/dx.

Using the chain rule, we get:

dy/dx = (1/2) ex/2 * (d/dx) (ex/2)

dy/dx = (1/2) ex/2 * (1/2) ex/2 * (d/dx) (x)

dy/dx = (1/4) ex/2 * ex/2

dy/dx = (1/4) ex

Using the above formula, we get:

dy = (1/4) ex dx

Now, we can substitute the given values x = 0 and dx = 0.05 to find dy:

dy = (1/4) e0 * 0.05

dy = (1/4) * 0.05

dy = 0.0125

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This table represents a quadratic function with a vertex at (1, 0). What is the
average rate of change for the interval from x= 5 to x = 6?
A 9
OB. 5
C. 7
D. 25
X
-
2
3
4
5
0
4
9
16
P

Answers

Answer: 9

Step-by-step explanation:

Answer:To find the average rate of change for the interval from x = 5 to x = 6, we need to calculate the change in the function values over that interval and divide it by the change in x.

Given the points (5, 0) and (6, 4), we can calculate the change in the function values:

Change in y = 4 - 0 = 4

Change in x = 6 - 5 = 1

Average rate of change = Change in y / Change in x = 4 / 1 = 4

Therefore, the correct answer is 4. None of the given options (A, B, C, or D) match the correct answer.

Step-by-step explanation:

You will begin with a relatively standard calculation Consider a concave spherical mirror with a radius of curvature equal to 60.0 centimeters. An object 6 00 centimeters tall is placed along the axis of the mirror, 45.0 centimeters from the mirror. You are to find the location and height of the image. Part G What is the magnification n?. Part J What is the value of s' obtained from this new equation? Express your answer in terms of s.

Answers

The magnification n can be found by using the formula n = -s'/s, where s' is the image distance and s is the object distance. The value of s' obtained from this new equation can be found by rearranging the formula to s' = -ns.


To find the magnification n, we can use the formula n = -s'/s, where s' is the image distance and s is the object distance. In this case, the object is placed 45.0 centimeters from the mirror, so s = 45.0 cm. The magnification can be found by calculating the ratio of the image distance to the object distance. By rearranging the formula, we get n = -s'/s.

To find the value of s' obtained from this new equation, we can rearrange the formula n = -s'/s to solve for s'. This gives us s' = -ns. By substituting the value of n calculated earlier, we can find the value of s'. The negative sign indicates that the image is inverted.

Using the given values, we can now calculate the magnification and the value of s'. Plugging in s = 45.0 cm, we find that s' = -ns = -(2/3)(45.0 cm) = -30.0 cm. This means that the image is located 30.0 centimeters from the mirror and is inverted compared to the object.

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Evaluate the integral: S dz z√/121+z² If you are using tables to complete-write down the number of the rule and the rule in your work.

Answers

Evaluating the integral using power rule and substitution gives:

[tex](121 + z^{2}) ^{\frac{1}{2} } + C[/tex]

How to evaluate Integrals?

We want to evaluate the integral given as:

[tex]\int\limits {\frac{z}{\sqrt{121 + z^{2} } } } \, dz[/tex]

We can use a substitution.

Let's set u = 121 + z²

Thus:

du = 2z dz

Thus:

z*dz = ¹/₂du

Now, let's substitute these expressions into the integral:

[tex]\int\limits {\frac{z}{\sqrt{121 + z^{2} } } } \, dz = \int\limits {\frac{1}{2} } \, \frac{du}{\sqrt{u} }[/tex]

To simplify the expression further, we can rewrite as:

[tex]\int\limits {\frac{1}{2} } \, u^{-\frac{1}{2}} {du}[/tex]

Using the power rule for integration, we finally have:

[tex]u^{\frac{1}{2}} + C[/tex]

Plugging in 121 + z² for u gives:

[tex](121 + z^{2}) ^{\frac{1}{2} } + C[/tex]

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Use limits to find the derivative function f' for the function f. b. Evaluate f'(a) for the given values of a. 2 f(x) = 4 2x+1;a= a. f'(x) = I - 3'

Answers

the derivative function of f(x) is f'(x) = 8.To find f'(a) when a = 2, simply substitute 2 for x in the derivative function:

f'(2) = 8So the value of f'(a) for a = 2 is f'(2) = 8.

The question is asking for the derivative function, f'(x), of the function f(x) = 4(2x + 1) using limits, as well as the value of f'(a) when a = 2.

To find the derivative function, f'(x), using limits, follow these steps:

Step 1:

Write out the formula for the derivative of f(x):f'(x) = lim h → 0 [f(x + h) - f(x)] / h

Step 2:

Substitute the function f(x) into the formula:

f'(x) = lim h → 0 [f(x + h) - f(x)] / h = lim h → 0 [4(2(x + h) + 1) - 4(2x + 1)] / h

Step 3:

Simplify the expression inside the limit:

f'(x) = lim h → 0 [8x + 8h + 4 - 8x - 4] / h = lim h → 0 (8h / h) + (0 / h) = 8

Step 4:

Write the final answer: f'(x) = 8

Therefore, the derivative function of f(x) is f'(x) = 8.To find f'(a) when a = 2, simply substitute 2 for x in the derivative function:

f'(2) = 8So the value of f'(a) for a = 2 is f'(2) = 8.

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Product, Quotient, Chain rules and higher Question 2, 1.6.3 Part 1 of 3 a. Use the Product Rule to find the derivative of the given function. b. Find the derivative by expanding the product first. f(x)=(x-4)(4x+4) a. Use the product rule to find the derivative of the function. Select the correct answer below and fill in the answer box(es) to complete your choice. OA. The derivative is (x-4)(4x+4) OB. The derivative is (x-4) (+(4x+4)= OC. The derivative is x(4x+4) OD. The derivative is (x-4X4x+4)+(). E. The derivative is ((x-4). HW Score: 83.52%, 149.5 of Points: 4 of 10

Answers

The derivative of the function f(x) = (x - 4)(4x + 4) can be found using the Product Rule. The correct option is OC i.e., the derivative is 8x - 12.

To find the derivative of a product of two functions, we can use the Product Rule, which states that the derivative of the product of two functions u(x) and v(x) is given by u'(x)v(x) + u(x)v'(x).

Applying the Product Rule to the given function f(x) = (x - 4)(4x + 4), we differentiate the first function (x - 4) and keep the second function (4x + 4) unchanged, then add the product of the first function and the derivative of the second function.

a. Using the Product Rule, the derivative of f(x) is:

f'(x) = (x - 4)(4) + (1)(4x + 4)

Simplifying this expression, we have:

f'(x) = 4x - 16 + 4x + 4

Combining like terms, we get:

f'(x) = 8x - 12

Therefore, the correct answer is OC. The derivative is 8x - 12.

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If y(x) is the solution to the initial value problem y' - y = x² + x, y(1) = 2. then the value y(2) is equal to: 06 02 0-1

Answers

To find the value of y(2), we need to solve the initial value problem and evaluate the solution at x = 2.

The given initial value problem is:

y' - y = x² + x

y(1) = 2

First, let's find the integrating factor for the homogeneous equation y' - y = 0. The integrating factor is given by e^(∫-1 dx), which simplifies to [tex]e^(-x).[/tex]

Next, we multiply the entire equation by the integrating factor: [tex]e^(-x) * y' - e^(-x) * y = e^(-x) * (x² + x)[/tex]

Applying the product rule to the left side, we get:

[tex](e^(-x) * y)' = e^(-x) * (x² + x)[/tex]

Integrating both sides with respect to x, we have:

∫ ([tex]e^(-x)[/tex]* y)' dx = ∫[tex]e^(-x)[/tex] * (x² + x) dx

Integrating the left side gives us:

[tex]e^(-x)[/tex] * y = -[tex]e^(-x)[/tex]* (x³/3 + x²/2) + C1

Simplifying the right side and dividing through by e^(-x), we get:

y = -x³/3 - x²/2 +[tex]Ce^x[/tex]

Now, let's use the initial condition y(1) = 2 to solve for the constant C:

2 = -1/3 - 1/2 + [tex]Ce^1[/tex]

2 = -5/6 + Ce

C = 17/6

Finally, we substitute the value of C back into the equation and evaluate y(2):

y = -x³/3 - x²/2 + (17/6)[tex]e^x[/tex]

y(2) = -(2)³/3 - (2)²/2 + (17/6)[tex]e^2[/tex]

y(2) = -8/3 - 2 + (17/6)[tex]e^2[/tex]

y(2) = -14/3 + (17/6)[tex]e^2[/tex]

So, the value of y(2) is -14/3 + (17/6)[tex]e^2.[/tex]

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Consider the following function e-1/x² f(x) if x #0 if x = 0. a Find a value of a that makes f differentiable on (-[infinity], +[infinity]). No credit will be awarded if l'Hospital's rule is used at any point, and you must justify all your work. =

Answers

To make the function f(x) = e^(-1/x²) differentiable on (-∞, +∞), the value of a that satisfies this condition is a = 0.

In order for f(x) to be differentiable at x = 0, the left and right derivatives at that point must be equal. We calculate the left derivative by taking the limit as h approaches 0- of [f(0+h) - f(0)]/h. Substituting the given function, we obtain the left derivative as lim(h→0-) [e^(-1/h²) - 0]/h. Simplifying, we find that this limit equals 0.

Next, we calculate the right derivative by taking the limit as h approaches 0+ of [f(0+h) - f(0)]/h. Again, substituting the given function, we have lim(h→0+) [e^(-1/h²) - 0]/h. By simplifying and using the properties of exponential functions, we find that this limit also equals 0.

Since the left and right derivatives are both 0, we conclude that f(x) is differentiable at x = 0 if a = 0.

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Using the Accounting Equation Assets = Liabilities + Equity, analyze each transaction and show its effects as increases or decreases in the appropriate column. Determine the total balance for both the Assets side and the Liabilities + Equity side showing that both sides are equal.Owner Jiwanjot Kaur invested cash $10,000Owner billed a customer $600 cash for services done $600 Cash received for work done for a client $7,000Government grant applied for but still in processing, no approval yet. $ 10,000Salary paid to assistant $ 4,500Work completed for a customer on credit $1,250 For vectors x = [3,3,-1] and y = [-3,1,2], verify that the following formula is true: (4 marks) 1 1 x=y=x+y| Tx-y| b) Prove that this formula is true for any two vectors in 3-space. (4 marks) What are the new changes in the new insolvency law and their potential repercussions? Suppose y is a non-zero solution to the following DE y' + p(t)y = 0. If y2 is any other solution to the above Eq, then show that y2 = cy for some c real number. (Hint. Calculate the derivative of y2/y1). (b) Explain (with enough mathematical reasoning from this course) why there is no function other than y = ex with the property that it is equal to the negative of its derivative and is one at zero! Rewrite these relations in standard form and then state whether the relation is linear or quadratic. Explain your reasoning. (2 marks) a) y = 2x(x 3) b) y = 4x + 3x - 8 Let v and v2 be the 4 x 1 columns of MT and suppose P is the plane through the origin with v and v as direction vectors. (a) Find which of v and v2 is longer in length and then calculate the angle between and v2 using the dot product method. [3 marks] (b) Use Gram-Schmidt to find e2, the vector perpendicular to v in P, express e2 with integer entries, and check that ee2 = 0. [3 marks] 1 (c) Now take v3 := 0- and use 0 Gram-Schimdt again to find an ez is orthogonal to e and e2 but is in the hyperplane with v, v2 and v3 as a basis. [4 marks] 3 1 -1 1 -5 5 5 2 -3 What are the advantages and disadvantages for BMW as it responds to moves by its competitors? Construct a proof for the following sequents in QL: (z =^~cz^^~)(ZA)(^A) = XXS(XA) -| How did labor in British families change in the eighteenth century? ... In the eighteenth century, railroad construction on the European continent. On September 1, 2019, a company paid $8,400 in advance for two years insurance and debited prepaid insurance. The December 31, 2019, adjusting entry should include a debit to OA. insurance expense for $7,000 OB, insurance expense for $1,400 OC. prepaid insurance for $1,400, OD. prepaid insurance for $2.800 Draaksh believes that the above cost estimates will not substantially change for the next fiscal year. Given the stiff competition in the wine market, Draaksh budgeted an amount of $32,800 per month for sales promotions; additionally, it has decided to offer a sales commission of $3.75 per bottle to its sales personnel. Administrative expenses are expected to be $24,400 per month. Required: 1. Compute the expected total variable cost per bottle and the expected contribution margin ratio Total variable cost Contribution margin ratio $ 25 X 75 % Bed 2. Compute the annual break-even sales in units and dollars. (Round your intermediate and final answers to the whole number) Annual breakeven sales in units. Annual breakeven sales in dollars Margin of safety Budgeted sales $ 3. Draaksh has budgeted sales of $7.9 million for the next fiscal year. What is the company's margin of safety in dollars and as a percentage of budgeted sales? (Round your intermediate and final answers to the whole number). Margin of Safety ____ Percentage of Budgeted Sales _____ A manufacturer has fixed costs (such as rent and insurance) of $3000 per month. The cost of producing each unit of goods is $2. Give the linear equation for the cost of producing x units per month. KIIS k An equation that can be used to determine the cost is y=[] Nicole measures 25 g of sodium carbonate with 10 mL of vinegar and determines the total mass of the reactants and the beaker to be 100 g. After mixing the two reactants, she observes bubbling and a white residue. The total mass is now 98 g. Did the principle of the conservation of mass apply in this example? Explain your answer. I am Alfonso jones quotes Can someone find me quotes thats in the I am Alfonsos jones book? what is the mass of 12.82 moles of lithium (li) atoms? You plan on making quarterly payments for the next ten years in order to accumulate $350,000. If the rate of return is 5% compounded quarterly, determine the value of the quarterly payments. [Show detailed calculation]. To facilitate the emulsification of dietary fats, the gallbladder stores and releasesa) hydrochloric acid.b) lipase.c) bile.d) bicarbonate.