Question

The lengths of the sides of a triangular sign are x inches, (4x - 5) inches, and (7x+8) inches. What is the perimeter of the sign?

The perimeter of the sign is in.
(Simplify your answer Do not factor)​

Answer 1

The perimeter of triangular sign is 12x+3

Explanation:

Length of side1 of triangle = x inches

Length of side2 of triangle = 4x-5 inches

Length of side3 of triangle = 7x+8 inches

We need to find perimeter of triangular sign.

The formula used is:
`Perimeter \ of \ triangle = Sum \ of \ all \ three \ sides`

Now, finding perimeter of triangular sign:

`Perimeter \ of \ triangle = Sum \ of \ all \ three \ sides\\Perimeter \ of \ triangle = x+4x-5+7x+8\\Perimeter \ of \ triangle = x+4x+7x-5+8\\Perimeter \ of \ triangle = 12x+3`

The perimeter of triangular sign is 12x+3