SOLUTION: Need to figure length= Width= With a width that is 8 units shorter than it's length and covers an area of 240 square units Need equation too

Algebra.Com
Question 921846: Need to figure length= Width=
With a width that is 8 units shorter than it's length and covers an area of 240 square units
Need equation too

Answer by JoelSchwartz(130)   (Show Source): You can put this solution on YOUR website!

w=L-8
A=240
240=wL
240=L(L-8)
240=L^2-8L
L^2-8L-240=0
(L-20)(L+12)=0
((L-20)(L+12))/(L+12)=0/(L+12)
L-20=0
L=20
w=20-8
w=12

RELATED QUESTIONS

A rectangular Home lot has an area of 240 ft.². it’s width is shorter than its length by (answered by josgarithmetic)
How would you solve The design shows a rectangular home with a width that is 11 feet... (answered by Alan3354)
A farmer is given 36 feet of fencing material. He wants to experiment with different size (answered by richwmiller)
A rectangle parking lot has a length that is 8 yards greater that the width, the area of... (answered by ikleyn)
The length of a rectangle is 4 inches more than its width. If 2 inches are taken from the (answered by macston)
A rectangular piece of cardboaard is 2 units longer than it is wide. From each of its... (answered by solver91311)
area of a rectangle: A=LW The are of this rectangle is 39 square units. Find its... (answered by ShaunaJS,Jasmin15)
The length of a rectangular sign is 5 feet longer than the width. If the sign’s area is... (answered by lwsshak3)
The area of this rectangle is 45 square units. Find its length (the horizontal side) and... (answered by lwsshak3)