theradioactiveshock theradioactiveshock

22-05-2020
Mathematics

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Find the perimeter of the triangle or rectangle. The sides of each triangle are equal in length. Could you help with 16 and 18?

Find the perimeter of the triangle or rectangle The sides of each triangle are equal in length Could you help with 16 and 18 class=

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fadedfire07 fadedfire07

22-05-2020

16. 9

Since each side are congruent, you set the two sides to each other

7x-12=3x

Subtract 7x from both sides

-12=-4x

Divide -4 from both sides

3=x

3+3+3=9

18. 28

2x-3=3x-10

Add 10 on both sides

2x+7=3x

Subtract 2x on both sides

7=x

7+7+7+7=28

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