Question

Write an expression for the perimeter of the triangle shown below:

A triangle is shown with side lengths labeled 0.5x plus 9, 3x, and negative 3.4x minus 25.

6.9x − 16
6.9x + 16
0.1x − 16
0.1x + 16

Answer 1

perimeter of a triangle is the sum of all three sides

so you just need to add all the three sides, combine like terms