SOLUTION: Joe’s rectangular backyard has an area of 3,100 ft 2. If the length of his yard is 12 ft more than the width, what are the dimensions of his yard? PLEASE HELP!!

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Question 885820: Joe’s rectangular backyard has an area of 3,100 ft 2. If the length of his yard is 12 ft more than the width, what are the dimensions of his yard? PLEASE HELP!!
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Joe’s rectangular backyard has an area of 3,100 ft 2. If the length of his yard is 12 ft more than the width, what are the dimensions of his yard?
***
let x=width
x+12=length
length*width=area
..
x(x+12)=3100
x^2+12x-3100=0
(x-50)(x+62)=0
x=-62 (reject)
or
x=50
x+12=62
dimensions of his yard:50 ft by 62 ft