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3 years ago

If the perimeter of the following triangle is 7x-2, what is the length of the unknown side?

Mathematics

2 answers:

alisha [4.7K]3 years ago

5 0

unknown side = <span>7x-2 - (3x - 9 + x + 7)
</span> unknown side = 7x - 2 -3x + 9 -x - 7
unknown side = = 3x

answer

unknown side = 3x

AnnZ [28]3 years ago

4 0

perimeter = s+s+s

so 7x-2 = (3x-9) + (x+7) + ?

3x-9 + x+7 = 4x-2

7x-2 - 4x-2 = 3x

remaining side is 3x

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