writing solutions to 3x3 systems of linear equations from augmented matrices

Answer:

66 degrees

Step-by-step explanation:

By the Corresponding Angles Theorem, Angle 7 is equal to Angle 2. This means that the measure of Angle 2 is 114.

Since Angle 1 is supplementary to Angle 2:

[tex]114 + x = 180\\x = 66[/tex]

Angle 1 is 66 degrees

Answer: A

Step-by-step explanation:

The quotient is the result of the division between two numbers.

Answer:

n/3

Step-by-step explanation:

When you divide you get a quotient.

n divided by 3 will equal a quotient.

Answer: See attached.

Step-by-step explanation:

        This slope-intercept form equation shows us that there is a y-intercept of -7. This means that (0, -7) will be a point on the line. Next, we have a slope of positive 3. This means we will count up three units, right one unit, plot a point. Then we repeat.

Answer:

start at the y-intercept, plot some points using the slope, then connect them using a straight line.

Step-by-step explanation:

Generally you'll have an equation in slope-intercept form, which is denoted as: [tex]y=mx+b[/tex]

This is a really useful form for a couple of reasons, and it has two key features. Firstly, the "m" represents the slope of the linear equation.

This makes sense the definition of slope is: [tex]\frac{\text{change in y}}{\text{change in x}}[/tex]

and we can generally define the points:

[tex]\text{at x = 1, y = }m(1)+b\implies m+b\\\text{at x = 2, y = } m(2)+b\implies m + m + b\\\text{at x = 3, y = }m(3) + b\implies m + m + m +b\\\text{and so on...}[/tex]

as the x value increases by 1, the change in y is the "m" value, we have one more "m" than the previous x-value, so the slope is the "m" value, which is the coefficient of the x variable.

The second key feature of slope-intercept form is the y-intercept, which is represented as "b" in this form. This also makes sense because the y-intercept is simply when the x-value is zero, and if you plug in x=0 into the equation, you're only left with the "b" value

Knowing these two things we can analyze the equation given:

[tex]y = 3x-7[/tex]

since it's given in slope-intercept form, we know that slope = 3, and y-intercept = -7. We immediately know one point, which is the y-intercept, since the x-value is going to be zero at the y-intercept, so one point on the graph is: (0, -7)

now from this point we can draw the graph by going to the right one, and up three, by definition of a slope (as x increases by 1, the y-value increases by 3).

We can do something similar on the left side, except instead of right one and up three, we go left one, and down three. You may be asking why down three? Well as you go right one, you go up three, this means if you compare the previous point to the new point, the previous point is down three compared to the new point (which is to the right one), so if you were to go back, you would be going left one and down three.

Now from these points you can do the same thing to extend the line a bit, and since it's a linear equation you can connect them using a straight line.

I also attached a graph from desmos to illustrate what I was saying a bit and also show the graph.

Assuming that the rotation is anticlockwise (as it is not defined) the coordinates of B after the rotation are (-5, 1), so the correct option is C.

If the pentagon is rotated 90°, then all the vertices are also rotated 90° about the origin.

Here we don't know if the rotation is clockwise or anticlockwise, so we assume it is anticlockwise, as this is the standard rotation.

The orignal coordiates of point B are (1, 5)

This is on the first quadrant, a rotation of 90° anticlockwise will:

So we will go from a point (x, y) to (-y, x)

Then the new coordinates of B' are (-5, 1)

Thus, the correct option is C.

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Answer:

66 es pero que te ayude ■■♤♤

Answer:

  zero

Step-by-step explanation:

You want to know the remainder of the polynomial function for the divisor to be a factor?

A divisor is a factor of the dividend in any division problem if and only if the remainder is zero (0).

The divisor will be a factor of a polynomial function if division of the function by that divisor has a remainder of zero.

The lowest temperature with a z score of of -2.49 is 24.0 ˚F

Z scores, measures the amount of standard deviation sample X is from mean. the formula is below

z = (X - μ) / σ

Definition of variables

mean, μ = 4.4˚F

standard deviation, σ = 12.2 ˚F

X = lowest temperature

z = -2.49

substituting into the formula

-2.49 =  (X - μ) / σ

-2.49 = (X - 64.4) / 12.2

-2.49 * 12.2 = X - 64.4

-30.378 + 64.4 = X

X = 34.022

X = 34.0  (to one decimal place)

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The ordered pairs are of the form (x, y < 2x - 2), some examples of solutions are (0, -3) and (0, -4)

An ordered pair will be a solution if, when we replace the values of the ordered pair on the inequality, the inequality becomes true.

Here the inequality is:

y + 2 < 2x

Isolating one of the variables we get:

y < 2x - 2

Now let's assume we impose x = 0, then the inequality becomes:

y < 2*0 - 2

y < -2

So y can be any value smaller than -2, then for example:

(0, -3), (0, -4)...

All of these are solutions of the inequality.

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The height of the tree to the nearest hundredth of a meter is 8.64 meters

"Two or more ratios that reflect the same relation or comparison of numbers are known as equivalent ratios," according to the definition of the equivalent ratio in mathematics. The idea of corresponding fractions is comparable. The term "proportion" also refers to the equivalence of two ratios. Even if the values of the antecedent and the consequent are different, if we simplify them, we will still arrive at the same value.

How to solve?

Mia's height=1.65 m

Tree's equivalent height=26.45m

Mia's height w.r.t. the tree's shadow=26.45-21.40 =5.05m

Ratio of the equivalent height w.r.t original height=5.05:1.65 =3.06

Tree's original height= tree's equivalent height: ratio of Mia's height

                                   = 26.45:3.06 =8.64m

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The area of the shaded portion of the composite figure could be easily 25*25 - 1/2*13*10 that is 625 - 65 = 560 feet

When referring to a two-dimensional space or points, in mathematics, the term "area" is used. It refers to a region's or a flat object's size, such a square or rectangle. The area of a form is determined in geometry by dividing the length by the breadth. For example, the area of a square with a side length of 4 units is 4 x 4 = 16 square units. Square units, such as square inches, square feet, or square meters, are used to measure area. Triangles (1/2 x base x height), circles ( x radius squared), and trapezoids (1/2 x (base 1 + base 2) x height) are other basic geometric forms with associated area calculations.

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Using the trigonometric ratio of sin, cos and tan of Y, the values are 12.7, 12.7 and 12.4 degrees respectively

This involves using ratios of sine, cosine, tangent, cot, cosec, sec to find the missing sides of a right angle triangle.

In the triangle given;

Using angle Y as a reference point;

Sin Y = opposite / hypothenuse

sin Y = 9 / 41

Y = sin⁻¹ (9/41)

Y = 12.7°

The cosine value of Y

cos Y = adjacent / hypothenuse

cos Y = 40 / 41

Y = cos⁻¹(40 / 41)

Y = 12.7°

The tangent value of Y is

tan Y = opposite / adjacent

tan Y = 9 / 41

Y = tan⁻¹(9/41)

Y = 12.4°

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The hypotenuse leg theorem states that two right triangles are congruent if the hypotenuse and one leg of one right triangle are congruent to the other right triangle's hypotenuse and leg side.

What is the hypotenuse leg theorem?

The hypotenuse leg theorem states that two right triangles are congruent if the hypotenuse and one leg of one right triangle are congruent to the other right triangle's hypotenuse and leg side.

The HL Postulate states that if the hypotenuse and leg of one right triangle are congruent to the hypotenuse and leg of another right triangle, then the two triangles are congruent.

Hypotenuse-Leg (HL) for Right Triangles. There is one case where SSA is valid, and that is when the angles are right angles. In words, if the hypotenuse and a leg of one right triangle are congruent to the hypotenuse and a leg of a second right triangle, then the triangles are congruent.

Hence, if the hypotenuse leg theorem states that two right triangles are congruent if the hypotenuse and one leg of one right triangle are congruent to the other right triangle's hypotenuse and leg side.

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Answer:

1680

Step-by-step explanation:

In an isosceles triangle, two angles and two sides are always equal.

In geometry, an isosceles triangle is one with at least two sides of equal length.

It can be defined as having exactly two equal-length sides or as having at least two equal-length sides, with the equilateral triangle being an exception to the second definition.

Isosceles Triangle: A triangle is referred to as being isosceles if any of its two sides is equal.

if the triangle has X, Y, and Z as its three sides.

The triangle is isosceles when X = Y, X = Z, or Y = Z.

Scalene triangles are recognized as triangles without equal sides.

Therefore, in an isosceles triangle, two angles and two sides are always equal.

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The selling price of the radio with a cost price of 550 and sold at a profit of 35 is 585.

The selling price is how much a buyer pays for a product or service.

To calculate the selling price of the radio, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the selling price of the radio is 585.

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∠C is not congruent to any angle in DEF. Hence, option C is the correct answer.

From the given figure below,

In ΔABC,

∠A=33° and ∠C=88°

By angle sum property of triangles,

∠A+∠B+∠C=180°

33°+∠B+88°=180°

∠B=180°-33°-88°  [subtracting 33° and 88° from both sides]

∠B=59°

Now, In ΔDEF,

∠D=33° and ∠E=58°

By angle sum property of triangles,

∠D+∠E+∠F=180°

33°+58°+∠F=180°

∠F=180°-33°-58°  [subtracting 33° and 58° from both sides]

∠F=89°

Thus, ΔABC is not congruent to Δ DEF as∠C and ∠B are not congruent to any angle of the Δ DEF .

Hence, ∠C is not congruent to any angle in DEF."

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The complete question is -

Are the triangles congruent? Why or why not?

A) Yes, ∠A ≅∠D and AB ≅ DE.

B) Yes, they are congruent by either AAS or ASA.

C) No,∠C is not congruent to any angle in ΔDEF.

D) No, the congruent sides do not correspond.

The width and the length of the slab are 2 meters and 12 meters, respectively

From the question, we have the following parameters that can be used in our computation:

Width of a rectangular slab of concrete = 10m less than the length.

Area = 24 m²

These parameters can be represented as

Width = Length - 10

Area = Length * Width

So, we have

w = l - 10

A = lw

Also, we have

A = 24

Substitute w = l - 10 in A = lw

A = l(l - 10)

So, we have

l(l - 10) = 24

Expand

l² - 10l = 24

This gives

l² - 10l - 24 = 0

Expand

l² + 2l - 12l - 24 = 0

Factorize

(l + 2)(l - 12) = 0

So, we have

l = -2 and l = 12

The length cannot be negative

So, we have

l = 12

Recall that

w = l - 10

So, we have

w = 12 - 10

Evaluate

w = 2

Hence, the dimensions are 2 meters and 12 meters, respectively

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Possible question

The width of a rectangular slab of concrete is 10m less than the length. The area is 24 m ^2

Compute the dimensions of the slab

There is only one solution to the nonlinear system.

What is Nonlinear system?

A nonlinear system is a system in which the change of the output is not proportional to the change of the input.

The solutions of a nonlinear system of equations are in the form of x and y values and these are the points at which the graphs intersect. Such systems have no solution, or one or more solutions.

So, here function 1 is a parabola and function 2 is a straight line. The parabola is touching the straight line at one point only, so this has one solution.

Hence the answer is there is only one solution to the nonlinear system.

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The graph of exponential function y = 5.2^x

exponential function in the form y = ab^x + c

Exponential function:

An exponential function is a mathematical function of the following form: f ( x ) = a^x. where x is also a variable, and a is a constant called the base of the function.

where

a is the initial y - intercept.

b is the constant ratio.

c is the horizontal asymptote.

So, in this problem, we have:

constant ratio = 2

y-intercept at y = 5

horizontal asymptote at y = 0

The graph is in the image uploaded.

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Answer:

y=11x-5

Step-by-step explanation:

y=mx+b

28=11(3)+b

28=33+b

b=-5

y=11x-5

We can make addend just by adding a number to another number.

What is addend?

Addends in math can be defined as the numbers that we add together to get a sum. The numbers you use in addition are called addends; in multiplication, the analogous term is a factor. If you add 7 to 112, the 7 is an addend, and the second number is an augend, though you're unlikely to hear anyone other than a math teacher use either of these phrases. Addere, which means "to add to, join, or attach," is the Latin root of the word addend.

Any number that is added to another is referred to as an addend in mathematics. When you add 10 to 15, 10 is the addend. An addend can alternatively be referred to as a summand.

So in example 15 is an addend of 10.

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Prices of two ratios in the ratio is 4 : 1.

The ratio is defined as the comparison of two quantities of the same units that indicates how much of one quantity is present in the other quantity.

Ratios can be classified into two types. One is part to part ratio and the other is part to whole ratio. The part-to-part ratio denotes how two distinct entities or groups are related.

For example, the ratio of boys to girls in a class is 12: 15, whereas, the part-to-whole ratio denotes the relationship between a specific group to a whole.

For example, out of every 10 people, 5 of them like to read books. Therefore, the part to the whole ratio is 5: 10, which means every 5 people from 10 people like to read books.

Let us assume price of radios are x and y

According to the question

[tex]\frac{x + 20}{y+20} =\frac{5}{2}\\2x+40=5y+100\\2x-5y=60[/tex]-------------------------- eq(1)

and

[tex]\frac{x-5}{y-5} =\frac{5}{1}\\5y-x = 20[/tex]

5y-x = 20

multiplying this equation by 2

we get

10y-2x = 40 ------------------ eq(2)

adding eq 1 and 2

we get

5y=100

y=20

solving further we get x=80

Thus the ratio is 4 : 1.

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The probability of advancing five spaces is 0.2307.

Given that, the odds in favor of advancing five spaces are 3/10.

Probability can be defined as the ratio of the number of favourable outcomes to the total number of outcomes of an event.

The probability of advancing five spaces can be obtained as:

P =Odds/1+Odds

= [tex]\frac{\frac{3}{10} }{1+\frac{3}{10} }[/tex]

= [tex]\frac{\frac{3}{10} }{\frac{13}{10} }[/tex]

= 3/13

= 0.2307

Therefore, the probability of advancing five spaces is 0.2307.

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Answer:

1.0

Step-by-step explanation:

Hope this helps! :)

The solution is, 1.0 when 25/24 as a decimal rounded to the nearest tenth .

Rounding off means a number is made simpler by keeping its value intact but closer to the next number. It is done for whole numbers, and for decimals at various places of hundreds, tens, tenths, etc.

here, we have,

given that, 25/24

now, we have to rounded to the nearest tenth

as decimal, so, we have to divide 25 by 24

i.e. 25/24 = 1.041

we get, 1.041 => 1.0

so, it is 1.0  a decimal rounded to the nearest tenth

Hence, The solution is, 1.0 when 25/24 as a decimal rounded to the nearest tenth .

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Explanation:

Assuming points T, U, and V are all on the same straight line, then we can say the following:

TU + UV = TV

(4x) + (x+2) = 7

5x+2 = 7

5x = 7-2

5x = 5

x = 5/5

x = 1

Now we can determine the length of each piece.

as a check: TU + UV = 4+3 = 7 which matches perfectly with TV = 7. The answer is confirmed.

Once again, this assumes that points T, U, and V are collinear (i.e. on the same straight line). It also assumes that U is between T and V.

With percent increase or decrease situations, you have to consider the starting point as being 100%.  So if the account increased by 27%, it's now 100% + 27% or 127% of it's original value.

As a decimal, 127% = 1.27.  So 1.27 is your multiplier in this example.

And 1.27 • 7600 = 9652, which is the ending balance.

This gets the same result as finding 27% of 7600 and adding it back on to 7600, but does it more efficiently.

Answer: Ad Hominum

Step-by-step explanation:

It just attacks the person.

Answer:

12, 24,72,96,156

Step-by-step explanation:

1/2 package would be 1/2 of 24 which is 12

21 x 24 = 24

3 x 24 = 72

4 x 24 = 72

We know that 3 packages is 72 so 6 packages is double that at 144.  We also know that have a package is 12. so 144 + 12 = 156

Answer:

1/2 package = 1/2 of 24 = 12 pencils

1 package = 24 pencils

3 packages = 24*3 = 72 pencils

4 packages = 24*4 = 96 pencils

6 1/2 packages = 24*6.5 = 156

Step-by-step explanation:

1 package = 24 pencils

1/2 package = 1/2 of 24 = 12 pencils

1 package = 24 pencils

3 packages = 24*3 = 72 pencils

4 packages = 24*4 = 96 pencils

6 1/2 packages = 24*6.5 = 156