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chubhunter [2.5K]
3 years ago
11

Use the substitution method to solve the system of equations. Choose the

Mathematics
1 answer:
sertanlavr [38]3 years ago
4 0
The answer is C because if you substitute in X-6 for the y in the first equation (since X-6 is also equal to y), you get 2x=16 which means x=8. There is only one option where 8 is equal to X, but just to check you can substitute it back into either of the original equations to make sure that y=2.
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2w + 2l = 25

2 * 2 + 2l = 25

<em><u>Simplfiy.</u></em>

4 + 2l = 25

<em><u>Subtract 4 from both sides.</u></em>

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<em><u>Divide both sides by 2.</u></em>

l = 10.5

Now that we have the value of l, we can find the area.

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A = 21.

The length is 10.5cm.

The area of the rectangle is 21cm^2

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