Question

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

A triangle is shown with side lengths labeled 0.3x plus 24, 5x, and 0.2x minus 15.

10x − 9
10x − 39
5.5x − 9
5.5x + 9

Answer 1

5.5x + 9

Explanation:

0.3x plus 24, 5x, and 0.2x minus 15

Expression:

This means that,

0.3x + 24 + 5x + 0.2x - 15

We know the perimeter of the triangle is,

• P = a+b+c

Where a , b , c refers to the sides of that triangle.

So Just add them up:

• 0.3x + 24 + 5x + 0.2x - 15
• 0.3x+5x+0.2x + 24 - 15
• 0.5x+5x + 9
• 5.5x + 9

Hence,last choice is accurate.