Question

He length of a rectangle is 4 centimeters less than twice its width. the perimeter of the rectangle is 34 cm. what are the dimensions of the rectangle?

Answer 1

Answer:

I found:
length=10cm
width=7cm

Explanation:

Call the length l, the width w and the perimeter P; you get:

l=2w−4
P=2l+2w

Where P=34cm

so, substitute the first into the second for l:

34=2(2w−4)+2w
34=4w−8+2w
6w=42
w=426=7cm
use this into the irst equation:
l=2⋅7−4=14−4=10cm

hope it helps!