Need help with 8,9, and 10

Mathematics

1 answer:

AnnZ [28]3 years ago

6 0

Answer:C B A

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Please simplify with a explanation!~

PilotLPTM [1.2K]

Answer:

-4y + 20

Step-by-step explanation:

4(-y+5)

What we need to do here is get rid of the parentheses, which can be achieved through multiplication.

This is another way of saying 4 times -y plus 4 times 5.

Let's break the the parentheses down into 2 separate formulas.

4(-y) and 4(5)

Now we can multiply these two together to get -4y and +20. When combined, we get -4y +20.

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3 years ago

Natalie opened a bank account that earns 2.5% simple interest. If her account earned $180 over ten years, how much was Natalie's

Alekssandra [29.7K]

C. Is the correct answer

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3 years ago

Read 2 more answers

Find the surface area of the prism. A cube with side edges of 7 yards. yd2

ExtremeBDS [4]

Answer:

To find the surface area of a cube, use the formula: surface area = 6s^2, where s is the length of one of the sides. If you don't know the length of the sides, you can find the surface area using volume. Just find the cube root of the volume, which is equal to the length of one side of the cube.

Step-by-step explanation:

8 0

2 years ago

Suppose the average math SAT score for students enrolled at local community college is 490.4 with a standard deviation of 63.7.

lakkis [162]

Answer:

Option B) 9.1

Step-by-step explanation:

We are given the following in the question:

Average score = 490.4

Standard deviation = 63.7

Sample size, n = 49