Question

The length of a rectangle is 2 less than two times the width. Perimeter is 42. Find the length and the width.

Answer 1

Hi there

Your answer is

width= 5.75

length= 9.5

Explanation:

L=2w-2

P=42

Perimeter formula

L+L+W+W=P

(2w-2)+(2w-2)+w+w=42

8w-4=42

+4

8w=46

/8

w= 5.75

Plug in width in length formula!

L=2w-2

L=2(5.75)-2

L=9.5