Study Set:
Geometry Shapes Perimeter Test Questions

If the sides of a triangle are −2x+3, 9x, and −2(3x−2), what is the perimeter?

The perimeter of a triangle is the sum of all three sides of the triangle.

Add all the side lengths.

(−2x+3)+(9x)+[−2(3x−2)]

−2x+3+9x−6x+4

Combine like-terms.

The answer is: x+7

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