SOLUTION: The area of a rectangle is 18 square inches. THe length of the rectangle is twice its width. What is the length and width of the rectangle?

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Question 214273: The area of a rectangle is 18 square inches. THe length of the rectangle is twice its width. What is the length and width of the rectangle?
Answer by rfer(3352) About Me  (Show Source):
You can put this solution on YOUR website!
2x(x)=18
2x^2=18
x^2=9
x=3
2x=6