SOLUTION: Hello, My math question is this The length of a rectangle is 1 centimeter shorter than twice the width. It has an area of 45 square centimeters. What is the perimeter? Plea

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Question 428725: Hello,
My math question is this
The length of a rectangle is 1 centimeter shorter than twice the width. It has an area of 45 square centimeters. What is the perimeter?
Please help
Answer by checkley79(3341) About Me  (Show Source):
You can put this solution on YOUR website!
L=2W-1
LW=45
(2W-1)W=45
2W^2-W-45=0
(2W+()(W-5)=0
W-5=0
W=5 ANS.
L=2*5-1
L=10-1
L=9 ANS.
2L+2W=P
2*9+2*5=P
18+10=P
28=P ANS. FOR THR PERIMETER.