SOLUTION: The width of a rectangle is 6km less than twice its length. If its area is 216km, find the dimensions of the rectangle.
Here's what I came up with:
2x-6=216
2x-6+6=216+6
2
Algebra.Com
Question 111331: The width of a rectangle is 6km less than twice its length. If its area is 216km, find the dimensions of the rectangle.
Here's what I came up with:
2x-6=216
2x-6+6=216+6
2x=222
x=111
I'm not sure about this. word problems stump me sometimes.
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
let x=length, so 2x-6=width ___ (x)(2x-6)=216 ___ 2x^2-6x=216 ___ x^2-3x-108=0
(x-12)(x+9)=0
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