The Fernandez family has a square kitchen with an area of 182.25\ m^{2}182.25 m
2
.

​

​Find the perimeter of the Fernandez' square kitchen, in meters

To find the expected value of your wait time, we need to multiply the value of each possible outcome by its probability and then add up all the products. In this case, there are two possible outcomes: waiting 3 minutes or waiting 7 minutes.

The probability of waiting 3 minutes is 1/2, and the probability of waiting 7 minutes is also 1/2. Therefore, the expected value of your wait time is:

(3 minutes * 1/2) + (7 minutes * 1/2) = 5 minutes

So, on average, you can expect to wait about 5 minutes for the train.

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The value of y= 5.49≈ 5.5cm

What is 30-60-90 traingle?

The 30-60-90 triangle is cut straight through the middle along its altitude, like one half of an equilateral triangle. Its name is derived from its three angles of 30 degrees, 60 degrees, and 90 degrees. Any triangle with angles of 30-60-90 will look like this: The hypotenuse is always twice as long as the shortest leg, and the length of the long leg can be calculated by multiplying the short leg by the square root of three. The shortest leg is across from the 30-degree angle.

By 30-60-90 triangle rule,

Side across 60° angle = x

Hypotenuse side = 2x= 15

Side across 30° angle = x√3

By solving,

2x= 15

x= 7.5cm

So side across 60° angle= 7.5 cm

Side across 30° angle = 7.5×√3

                                     = 7.5× 1.732= 12.99≈ 13cm

As the figure given us square so,

13= 7.5+y

y= 13-7.5

y= 5.5 cm

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Dilation is a type of transformation. So it can concluded that: Line RS is parallel to line R'S'.

Transformation is a method required to either increase or decrease the size of a given object, or change its orientation. Types of transformation are dilation, translation, rotation and reflection.

Dilation is a process in which the size of a given shape or figure is reduced or increased appropriately to form an image.

Two lines are said to be perpendicular when the measure of angle between is a right angle. While two or more lines are said to be parallel is the measure of angle between them is that of a straight line.

Thus, the appropriate statement that would be concluded considering the conditions in the question is line RS is parallel to line R'S'.

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Answer:

87

Step-by-step explanation:

12x7+4-1/1

Answer: 741

Step-by-step explanation:

The biggest number Sam can make is 741. He can make this number by using the brackets and the division symbol: (12 + 1 + 1) / 4 = 741.

Answer:

1/5 of 1,212

Step-by-step explanation:

Note that 25% = 1/4 and 30% = 3/10.

The least value is achieved when we take the smallest fraction, which is 1/5.

Answer:

1/5 of 1212 is the smallest value

Step-by-step explanation:

if we convert 25% to a fraction we have 1/4

if we convert 30% to a fraction we have 3/10

now we convert each of the four fractions into equivalent fractions using lowest common denominator of 60

1/3 = 20/60

1/5 = 12/60

1/4 = 15/60

3/10 = 18/60

the smallest fraction is 12/60, or 1/5

therefore 1/5 of 1212 is the smallest value

Based on the rate of change, Zehra is buying 7 cans per week.

The rate of change gives the ratio between the change in one quantity to the change in another quantity.

Linear relationships have a constant rate of change and the rate of change is usually represented as the slope or gradient.

For instance, the number of cans changed from 29 to 57, a difference of 28, as the number of weeks changed from 5 to 9, a difference of 4.

The rate of change can be expressed as 28/4 or 7.

The number of cans after 5 weeks = 29

The number of cans after 9 weeks = 57

The change in weeks = 4 (9 - 5)

The change in the number of cans = 28 (57 - 29)

The rate of change = 7 (28/4)

Thus, we can conclude that Zehra buys 7 cans weekly.

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Answer:

1/2

Step-by-step explanation:

Since 5 is one of the six possible numbers available, rolling a 5 is a 1/6 probability.

Since rolling a number less than 3 means rolling a 1 or 2, rolling a 1 or 2 is a 2/6 probability.

Add those probabilities up since you can get either of those outcomes and you get 1/6+2/6=3/6

3/6=1/2

A quadrilateral with vertices A(-2, 2), 8(-3, 6), C(-7, 7), and D(-4, 1) is rotated 180° about the origin is Coordinates of D' (-6,3).

What is quadrilateral?

A quadrilateral is a flat shape with four edges and four corners, also known as vertices. The quadrilateral has angles at each of its four vertices, or corners. The angles at the vertices of a quadrilateral ABCD are ∠A, ∠B, ∠C and ∠D. A quadrilateral has the following sides: AB, BC, CD, and DA.

When any figure is rotated 180° in the counterclockwise direction, then the coordinates of the vertices is changed into its opposite sign.

(x, y) → (-x, -y)

The coordinates of the vertices of quadrilateral ABCD is changed when it is rotated 180 degrees counterclockwise about the origin as,

A (7,-7) → A'(-7,7)

B (4,-10) → B' (-4,10)

C (1.5, -2.5) → C' (-1.5, 2.5)

D (6, -3) → D'(-6,3)

So the coordinates of D' will be (-6,3).

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Answer:

b

Step-by-step explanation:

i know ..

z-score of a value is  -5.96

What is z-score in binomial distribution?

The Z score represents the number of standard deviations above or below the mean. The Z score of the mean is 0 by definition.

What is Probability?

The area of mathematics known as probability explores potential outcomes of events as well as their relative probabilities and distributions.

Given,

A random variable, let's call it X, has parameters that fit the Binomial distribution: n (number of trials) = 50 and p (success probability) 0.76.

We must ascertain the z-score (Z) of the value 20 =  that this random variable X has chosen.

Now, for a random variable, say X, its z-score (Z) is defined as ,

Z = (X - mean of X)/ Standard deviation of X

A binomial random variable with the parameters once more n and p, its mean is given as np and its standard deviation is given as [tex]\sqrt{n*p*(1-p)}[/tex]

The standard deviation of X is provided as [tex]\sqrt{50*0.76*0.24}[/tex] = [tex]\sqrt{9.12}[/tex] = 3.0199933  while the mean of X is given as 50*0.76 = 38.

Therefore, the required z-score (Z) for X = 20, is given as,

Z = 20-38/3.0199933

Z= -5.9602781238

Z= -5.96 that is the necessary z-score.

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Sam passed the marker of 483 miles, in 6 hours.

The equation model is defined as the model of the given situation in the form of an equation using variables and constants.

Here,
An expression is given as M = 58h + 135. shows how many miles the same has traveled for h hours,
To evaluate the mile marker that sam passed at 6 hours, substitute the value with h in a given expression.
M = 58×6 +135

Simplifying the above expression gives the mile marker
M = 483 miles

Thus, the required miles are 483.

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The independent and dependent variables in this function are order p Variable

Mathematically, discrete random variables are stated to be impartial if: P(X=x, Y=y) = P(X=x) P(Y=y), for all x,y. Intuitively, for impartial random variables understanding the price of one in every of them, does now no longer extrade the chances of the opposite. The impartial variable is the cause. Its price is impartial of different variables for your study.

The structured variable is the effect. Its price relies upon on adjustments withinside the impartial variable.An impartial variable is precisely what it sounds like. It is a variable that stands on my own and isn't always modified with the aid of using the opposite variables you are attempting to measure. For example, a persons age is probably an impartial variable.

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Given that the side lengths of the ramp are 10 feet, 2.5 feet, and 10.5 feet.

We know that for making a right angle A Pythagoras triplet must follow

So, a² + b² = c²

Where a, b, c are the lengths of the triangle and a, b <=c

So, on applying the above formula

We have,

2.5² + 10² = 10.5²

6.25 + 100 = 110.25

But 106.25 is not equal to 110.25

So all these sides are not good for making the ramp safe.

There are three types of the triangle based on angle -

1. Acute angled triangle

2. Right-angled triangle

3. Obtuse angled triangle

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Answer:

Step-by-step explanation:

I am not super sure about this one

The solution is y = ( 4/5 )x - 4

The slope intercept form of the equation is y = ( 4/5 )x - 4  where the slope of the line is 4/5 and the y intercept is -4

What is an Equation of a line?

The equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept

And y - y₁ = m ( x - x₁ )

y = y-coordinate of second point

y₁ = y-coordinate of point one

m = slope

x = x-coordinate of second point

x₁ = x-coordinate of point one

The slope m = ( y₂ - y₁ ) / ( x₂ - x₁ )

Given data ,

Let the equation of line be represented as A

Now , the value of A is given as

4x - 5y = 20   be equation (1)

On simplifying the equation , we get

Adding 5y on both sides of the equation , we get

5y + 20 = 4x

Subtracting 20 on both sides of the equation , we get

5y = 4x - 20

Divide by 5 on both sides of the equation , we get

y = ( 4/5 ) x - 4

The equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept

Therefore , the value of A is y = ( 4/5 ) x - 4

Hence , The slope intercept form of the equation is y = ( 4/5 )x - 4

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The x-intercept and y-intercept of the line will be at (24, 0) and (0, 6). And the line is drawn below.

A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.

The linear equation is given as,

x/a + y/b = 1

Where 'a' is the x-intercept of the line and ‘b’ is the y-intercept of the line.

The linear equation is given below.

y = -(1/4)x + 6

Convert the equation into intercept form, then we have

y = -(1/4)x + 6

4y = - x + 24

x + 4y = 24

x / 24 + y / 6 = 1

The x-catch and y-capture of the line will be at (24, 0) and (0, 6) and the line is drawn underneath.

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The mark obtained in the fourth subject is 19

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

Average marks in 3 subjects = 15

Average marks in 4 subjects = 15 + 1

When the number of subjects is increased by 1, we have the following equation

Average = Sum of subjects/Number of subjects

Substitute the known values in the above equation, so, we have the following representation

15 + 1 = (3 * 15 + Score in 4th subject)/4

So, we have

16 = (3 * 15 + Score in 4th subject)/4

Evaluate the products

16 = (45 + Score in 4th subject)/4

So, we have

45 + Score in 4th subject = 64

Subtract 45 from both sides

Score in 4th subject = 19

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Amount = $404.01

Second Period Interest = $ 2.01.

The interest that is computed using both the principal and the interest that has accrued during the previous period is called compound interest. It differs from simple interest in that the principal is not taken into account when determining the interest for the subsequent period with simple interest. Compound interest is commonly abbreviated C.I. in mathematics.

Different methods can be used to compute compound interest depending on the circumstance. To make the computations simpler, we may utilise the compound interest formula. We need to know the quantity and the principal in order to compute compound interest. The difference between the two is the principle.

In this problem,

Principal = $ 400

Rate(r) = 6% (annually)

Compounded monthly., n =12

Second Period of interest is the 2nd Month = [tex]\frac{2}{12} \ of \ a \ year = \frac{1}{6} \ of \ a \ year[/tex].(t)

Amount Generated (A)

= [tex]P(1 + \frac{r}{n})^{nt}[/tex]   = [tex]400(1 + \frac{6}{12 * 100})^{12*\frac{1}{6} } = 400(1 + \frac{1}{200})^{2} = 404.01[/tex]

Amount = $404.01

Second Period Interest = 2nd Period Amount - 1st period Amount = 404.01 - 402 = $ 2.01.

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Answer: The inverse of a function is found by switching the positions of the input and output values in the function. For example, if the function is f(x) = 2x, the inverse would be f^-1(x) = x/2.

In the case of the given function, f(x) = 8√ x, the inverse can be found by switching the positions of the input and output values. This gives us f^-1(x) = √ x/8. This means that if x is the input value, the output value will be √ x/8. Note that the domain of the inverse function is the range of the original function, and the range of the inverse function is the domain of the original function. In this case, the domain of f^-1(x) is [0, ∞) and the range is [0, ∞), since these are the range and domain of the original function.

Here is the complete inverse function:

f^-1(x) = √ x/8 for x > 0.

Answer:

2 1/4

Step-by-step explanation:

I know bc its basic math

The original price of the instrument is $60.

Discount Price:

50% of 120 = 50/100 * 120

                   = 0.5 * 120

                   = 60

Original Price = Sale Price - Discount Price                  

                       = 120 - 60

                       = 60

Therefore, the original price of the instrument is $60.

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Answer:

b. r = 18%

Step-by-step explanation:

0.3(0.82)^x:

0.3(0.82)^x:

The 0.82 is getting affected since it is raised to the power of x

Hence, for every iteration of x, the object is becoming 82% of itself.

100%-82%=18%

r = 18% ==> b

Option B is correct, 18% is the  rate of decay of the exponential function f(x) = 0.3(0.82)ˣ

A relation is a function if it has only One y-value for each x-value.

The exponential function f(x) = 0.3(0.82)^x can be written in the form f(x) = a(b)ˣ, where a = 0.3 and b = 0.82.

In an exponential function of the form f(x) = a(b)ˣ

the base b represents the rate of change.

If b is between 0 and 1, then the function represents exponential decay. The rate of decay r can be found using the formula:

r = (1 - b) x 100%

In this case, b = 0.82, so the rate of decay is:

r = (1 - 0.82) x 100%

= 0.18 x 100%

= 18%

Hence, option B is correct, 18% is the  rate of decay of the exponential function f(x) = 0.3(0.82)ˣ

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The correct answer is C.

Answer: point form: (4,3) equation form: x=4 y=3

Step-by-step explanation:

The dilated triangle is names ▲D'E'F' ,

Vertex D' → ( -8, 1)

Vertex E' → (4, 10)

Vertex F' → (7, 1)

What is dilation ?

Reducing the object's size by dilation is a change. The items are enlarged or shrunk through dilation. An image that retains the original shape is created by this alteration. The size of the form does differ, though. A dilatation should either enlarge or decrease the initial form. By using the phrase "scaling factor," this transition is described.

Enlargement is the name given to a dilatation that results in a larger image.

Reduction is what happens when a dilatation results in a smaller picture.

According to question

Since the center of dilation is not at the origin, we can use the following formula in order to find the coordinates of the vertices of the triangle D'E'F':

[tex]D_{(O,k)}(x,y) = (k(x-a) +a, k(y-b) +b)[/tex]

Where "O" is the center of dilation at (a,b) and "k" is the scale factor.

In this case you can identify that:

(a,b) = (1,1)

k = 3

Therefore, susbtituting values into the formula shown above, you get that the coordinates ot the resulting triangle D'E'F, are the following:

Vertex D' → [tex](3(-2-1) +1, 3(1-1) +1) = (-8, 1)[/tex]

Vertex E' → [tex](3(2-1) +1, 3(4-1) +1) =(4,10)[/tex]

Vertex F' →[tex](3(3-1) +1, 3(1-1) +1) =(7,1)[/tex]

hence the vertex of ▲D'E'F' are (D' → ( -8, 1),  E' → (4, 10), F' → (7, 1).)

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The equivalent to 5a³ + 4a³ is (5+4) a³, according to the question.

What do you mean by Equivalent ?

Equivalent refers to the mathematical notion that distinct terms and expressions having a similar value are treated equally.

According to the given question,

We have the given options are:

O (5+4) a³+3

O (5+4) a³

O (5.4) a³+3

O (5.4) a³

Now, we will find the equivalent,

5a³ + 4a³

Then, we will taking common factor from the given equation:

5a³ + 4a³

= a³(5+4)

So that is same as (5+4)a³.

Therefore, the equivalent to 5a³ + 4a³ is (5+4) a³.

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Answer: Y=mx+b

Step-by-step explanation:

945 divided by 9 = 105.

What is divided?

In mathematics, division is the process of dividing a number into equal parts and calculating the maximum number of equal parts that may be formed. For instance, dividing 15 by 3 results in the division of 15 into 3 groups of 5 each. The division sign, ",÷" or occasionally "/," is used in computer code.

If the sum of the digits is not divisible by 9, then 945 is not divisible by 9.

The sum of the digits is calculated as follows:

9 + 4 + 5 = 18

18 is divisible by 9

[tex]\frac{945}{9}$$[/tex]

Write the problem in long division format

[tex]9 \longdiv { 9 4 5 }[/tex]

Divide 9 by 9 to get 1

[tex]$$\begin{gathered}91 \\\frac{1}{945} \\\frac{9}{04}\end{gathered}$$[/tex]

Divide 4 by 9 to get 0

[tex]$$\begin{gathered}910 \\\frac{10}{945} \\\frac{0}{45}\end{gathered}$$[/tex]

Divide 45 by 9 to get 5

[tex]$$\begin{gathered}9105 \\\frac{9}{045} \\\underline{4} \\\frac{45}{0}\end{gathered}$$[/tex]

The solution for Long Division of [tex]$\frac{945}{9}$[/tex] is 105

105

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