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horrorfan [7]
3 years ago
8

How to solve this question

Mathematics
1 answer:
Fiesta28 [93]3 years ago
4 0
7 = 5y - 3
add 3 to both sides
10 = 5y
divide both sides by 5
2 = y
-1 = 5y - 3
add 3 to both sides
2 = 5y
divide bothe sides by 5
2/5 = y
-3 = 5y - 3
add 3 to both sides
0 = 5y
divide both sides by 5
0 = y
6 = 5y - 3
add 3 to both sides
9 = 5y
divide both sides by 5
9/5 = y
-8 = 5y - 3
add 3 to both sides
-5 = 5y
divide both sides by 5
-1 = y
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I have been stuck on number 10 (this problem) for a while now. Can anyone help me with it and walk me through every step in orde
kotykmax [81]
When you multiply a same number but with different powers, you can simply add the powers together. So, in your question, add the powers -1 and -7 together.
7^(-1) x 7^(-7) = 7^(-8)

When you divide a same number but with different powers, you subtract the power at the top with the power from the denominator. So, -8 - (-7) = -1.
7^(-8) / 7^(-7) = 7^(-1)

So your answer would be 7^(-1).
Hopefully my explanation was clear?
5 0
3 years ago
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Chris made his aunt a garden. The width is 7 2/5 ft and the length is 5 1/2 ft. What is the area of the garden?
pishuonlain [190]

Answer:

Hello! if Chris garden is a square shape then the answer is 40 7/10 in fraction form or 40.7 in decimal form

6 0
2 years ago
Compare the sets of numbers given and place them in the correct column or incorrect column.
TEA [102]

Answer:

I think the answer is option 3

3 0
3 years ago
PLEASE HELP!!!!!!!!<br> also, show all work<br> Thank you:)
barxatty [35]

Problem 1

<h3>Answer:  104 cubic inches</h3>

----------------------

Explanation:

The prisms are similar so they have the same shape, but different sizes.

The linear scale factor from small to large is:

large/small = 10/4 = 2.5

Meaning that we multiply each dimension of the smaller prism by 2.5 to get the corresponding side length of the larger prism

4*2.5 = 10

This linear scale factor is then cubed to get the volume scale factor

(2.5)^3 = 15.625

Which tells us:

larger volume = 15.625*(smaller volume)

smaller volume = (larger volume)/15.625

smaller volume = (1625)/15.625

smaller volume = 104 cubic inches

========================================================

Problem 2

<h3>Answer:  650 square inches</h3>

----------------------

Explanation:

We will go back to the linear scale factor of 2.5

This time, we square it to get (2.5)^2 = 6.25

This is the surface area scale factor.

larger surface area = 6.25*(smaller surface area)

larger surface area = 6.25*(104)

larger surface area = 650 square inches

4 0
2 years ago
Given 0 below, if GH and JK are congruent, what is the measure of KOJ?
alexira [117]

Answer:

D

Step-by-step explanation:

Since GH and JK  are congruent then the central angles are congruent, that is

∠KOJ = ∠HOG = 68° → D

8 0
3 years ago
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