A rectangle is drawn so that the width is 3 feet shorter than the length. the area of the rectangle is 40 square feet. find the

Question

postnew [5]

3 years ago

10

A rectangle is drawn so that the width is 3 feet shorter than the length. the area of the rectangle is 40 square feet. find the

length of the rectangle.

Mathematics

1 answer:

Tpy6a [65] · Answer 1 · 2022-04-04T05:10:19+03:00

Tpy6a [65]3 years ago

3 0

Draw a rectangle and label the right side as L-3 and the bottom side as L.

Area is L x W...in this case L(L-3) = 40.....we get

L^2 - 3L = 40 (subtract 40 from each side we get...)
L^2 - 3L - 40 = 0 (factor this out to get the L and W)

8 and 5