SOLUTION: The length of a rectangular sign is 5 feet longer than the width. If the sign’s area is 300 square feet, find it’s length and width.
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Question 758199: The length of a rectangular sign is 5 feet longer than the width. If the sign’s area is 300 square feet, find it’s length and width.
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
The length of a rectangular sign is 5 feet longer than the width. If the sign’s area is 300 square feet, find it’s length and width.
***
let x=width
x+5=length
area=length times width
(x+5)x=300
x^2+5x-300=0
(x+20)(x-15)=0
x+20=0
x=-20 (reject, x>0)
x=15
x+5=20
..
width=15 ft
length=20ft
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