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2 years ago

Cho A =

Mathematics

1 answer:

FromTheMoon [43]2 years ago

5 0

Step-by-step explanation:

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Question 1: Describe how you would use the distributive property to simplify (39 x 5). Question 2: Your best friend tells you th

Alexxx [7]

39 x 5 = (30 x 5) + (9 x 5) = 150 + 45 = 195

He did not change the sign of operation when 28 crossed the equals sign.

6 0

3 years ago

A wood frame costs $1.50. Use a property to write an equivalent expression for the cost of a wood frame.

podryga [215]

Let the width of the frame = x
Let the cost of a linear foot of the frame = y
Let the inside dimension of the length of the frame = a
Let the inside dimension of the width of the frame = b.

The total length of the frame = 2*a + 4x
The total width of the frame = 2b

The total amount of the frame in feet is (2a + 4x + 2b)*y = Cost
If this is incorrect please leave a message on my home page.

6 0

3 years ago

What is 4.16 repeating as a fraction

strojnjashka [21]

4.16=416/100
416/100=4•104/4•25
=104/25
4.16=104/25

8 0

3 years ago

Read 2 more answers

If 1/2 gallon of paints cover 1/4 of a wall,then how much paint is needed to cover the entire wall?

Degger [83]

Answer:

2 Gallons are needed to cover entire wall

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3 years ago

Use the following table for questions 11-13.A baseball manager believes a linear relationship exists between the number of Home

slamgirl [31]

The regression equation of Y on X is given by the following formula:

$Y-\bar{Y}=b_{yx}(X-\bar{X})$

Where byx is given by the formula:

$b_{yx}=\frac{N\sum^{}_{}XY-\sum^{}_{}X\sum^{}_{}Y}{N\sum^{}_{}X^2-(\sum^{}_{}X)^2}$

Where N is the number of values (N=8). We need to find the sum of X values, the sum of Y values, the average of X, the average of Y, the sum of X*Y and the sum of X^2.

The table of values is:

The values we need to know are on the following table:

By replacing the known values in the formula we obtain:

$\begin{gathered} b_{yx}=\frac{8\cdot26125-167\cdot995}{8\cdot4649-(167)^2} \\ b_{yx}=\frac{209000-166165}{37192-27889} \\ b_{yx}=\frac{42835}{9303} \\ b_{yx}=4.6 \end{gathered}$

Now, the average of X and Y is the sum divided by N, then:

$\begin{gathered} \bar{X}=\frac{167}{8}=20.87 \\ \bar{Y}=\frac{995}{8}=124.37 \end{gathered}$

Replace these values in the formula and find the regression equation as follows:

$\begin{gathered} Y-124.37=4.6(X-20.87) \\ Y-124.37=4.6X-4.6\cdot20.87 \\ Y=4.6X-96.11+124.37 \\ Y=4.6X+28.26 \end{gathered}$

The answer is a) y=4.6x+28.26

7 0

1 year ago