A triangle has sides with lengths of 2x - 7 , 5x - 3 , and 2x - 2. What is the perimeter of the triangle ? .. choices : a. 9x - 12 b. 5x - 12 c. -x - 6 d. -3x

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asked Jan 28, 2015 25.1k views

2 votes

A triangle has sides with lengths of 2x - 7 , 5x - 3 , and 2x - 2. What is the perimeter of the triangle ? .. choices : a. 9x - 12 b. 5x - 12

c. -x - 6 d. -3x

Mathematics
high-school

Ricard asked

by Ricard

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A 9x-12 you have to add all the sides together

Lista answered Jan 30, 2015

by Lista

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$a= 2x-7 \\ b=5x-3 \\ c=2x-2 \\ P=a+b+c=2x-7+5x-3+2x-2=9x-12$

The answer is A. 9x-12.

Ddreian answered Feb 3, 2015

by Ddreian

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