SOLUTION:
the length of a rectnagle is 3 less than three times its width. If the area of the rectangle is 90 square inches, find the dimensions of the recangle
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the length of a rectnagle is 3 less than three times its width. If the area of the rectangle is 90 square inches, find the dimensions of the recangle
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Question 696400:
the length of a rectnagle is 3 less than three times its width. If the area of the rectangle is 90 square inches, find the dimensions of the recangle Answer by checkley79(3341) (Show Source):
You can put this solution on YOUR website! AREA=L*W
L=3W-3
90=(3W-3)W
90=3W^2-3W
3W^2-3W-90=0
(3W+15)(W-6)=0
W-6=0
W=6 ANS. FOR THE WIDTH.
L=3*6-3
L=18-3
L=15 ANS. FOR THE LWNGTH.
PROOF:
90=15*6
90=90
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