Posted by Anonymous on Wednesday, July 27, 2011 at 1:42pm.
A = Area= 190 in^2
H = Hight
W = Width
H = 2W-1
A = W*H
A = W*(2W-1)
190 = 2W*W-1*W
190 = 2W^2-W
2W^2-W-190 = 0
The exact solutions of this equation are:
W=10
and
W= -19/2
Width can't be negative so:
W = 10 in
H = 2*W-1
H = 2*10-1
H = 20-1
H = 19 in
W = 10 in
H = 19 in
A = W*H
A = 10*19
A = 190 in^2
If you dont know solve quadratic equation, in google type:
quadratic equation online
When you see list of results click on:
Free Online Quadratic Equation Solver:Solve By Quadratic Formula
When page be open in rectangle type:
2W^2-W-190=0
and click option: solve it!
You will see solution step-by-step
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