Question

1. write an expression that represents the perimeter of the triangle. 3m - 2 5m - 2 2m + 7

Explanation:

Step1: Recall perimeter formula

The perimeter $P$ of a triangle is the sum of the lengths of its sides. So $P=(3m - 2)+(2m + 7)+(5m-2)$.

Step2: Combine like - terms

First, combine the $m$ terms: $3m+2m + 5m=(3 + 2+5)m=10m$. Then, combine the constant terms: $-2 + 7-2=3$.
So the expression for the perimeter is $10m+3$.

Answer:

$10m + 3$