SOLUTION: the sides of a rectangle have lengths 7,x, and x + 1. if the perimeter is 30, find the value of x.

Algebra ->  Equations -> SOLUTION: the sides of a rectangle have lengths 7,x, and x + 1. if the perimeter is 30, find the value of x.      Log On


   

Question 155078This question is from textbook algebra
: the sides of a rectangle have lengths 7,x, and x + 1. if the perimeter is 30, find the value of x. This question is from textbook algebra

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
7+x+x+1=30
2x+8=30
2x=30-8
2x=22
x=22/2
x=11 one side.
11+1=12 for another side.
Proof:
7+11+12=30
30=30