Two times the width of a certain rectangle exceeds its length by three inches, and eight times its length is twelve more than it

Question

NARA [144]

3 years ago

7

Two times the width of a certain rectangle exceeds its length by three inches, and eight times its length is twelve more than it

s perimeter. Find the width of the rectangle.

Mathematics

1 answer:

yan [13] · Answer 1 · 2022-08-18T16:19:05+03:00

yan [13]3 years ago

3 0

Perimeter is the sum of all sides of a shape. For a rectangle, it is the sum of the two lengths and two width measurements. We set up the equations as follows:

l = 2w - 3

P = 8l - 12

P = 2w + 2l
8l -12 = l - 3 + 2l
5l = 9
l = 9/5

9/5 = 2w - 3
w = 12/5