The first side of a triangle measures 3 in. less than the second side, the third side is 2 in. more than the first side, and the

Question

3 years ago

14

perimeter is 20 in. Set up an equation that relates the sides of the triangles in terms of the perimeter of the triangle.

1 answer:

Debora [2.8K] · Answer 1 · 2022-06-05T16:09:21+03:00

Answer:

P = 3x - 4

Step-by-step explanation:

Side 1 = x - 3

Side 2 = x

Side 3 = 2 + (Side 1) = 2 + x - 3 = x - 1

Perimeter = 20 in

Perimeter = Side 1 + Side 2 + Side 3

Perimeter = (x - 3) + (x) + (x - 1)

Perimeter = x - 3 + x + x - 1

Perimeter = 3x - 3 - 1

Perimeter = 3x - 4

P = 3x - 4