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The side length of an equilateral triangle is 4x – 5. Which expression represents

the perimeter of the triangle?
A) 4x – 15 B) 12x – 5 C) 12x – 15 D) 7x – 8

User Qortex
by
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1 Answer

5 votes

Answer:

12x-15

Explanation:

A triangle has 3 sides

An equilateral triangle has 3 sides that are all the same length

The perimeter of a triangle is

P = s1+s2+s3

P = 4x-4 + 4x-5+4x-5

Combine like terms

P = 12x -15

User MStew
by
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