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Question 80186This question is from textbook Algebra 1
: The length of a rectangle is represented by x+1. Its width is represented by x-3. If the area of the retangle is 117 squre centimeters, what are the dimensions of the rectangle?
Note: I calculated -10cm and 12cm, however, the book provided anwers of 9cm and 13cm.
This question is from textbook Algebra 1
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! The length of a rectangle is represented by x+1. Its width is represented by x-3. If the area of the retangle is 117 squre centimeters, what are the dimensions of the rectangle?
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(x+1)(x-3)=117
x^2-2x-3=117
x^2-2x-120=0
(x-12)(x+10)=0
Positive answer: x=12 so x+1=13 and x-3=9
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Cheers,
Stan H.
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