Answer
The length of the remaining side is up to 2 inches.
Work Step by Step
perimeter ≤12
Substitute the given side length in the formula for perimeter. Let s be the length of the unknown side.
2(5)+s≤12 ⟶ multiply
10+s≤12 ⟶ subtract 10 from both sides
10+s−10≤12−10 ⟶ simplify
s≤2