Posted by Ashley on Thursday, January 28, 2010 at 2:03pm.
Translate the problem into a pair of linear equations in two variables. Solve the equations using either elimination or substitution. State your answer for both variables.
The perimeter of a rectangle is 72m. If the width were doubled and the length were increasd by 9m, then the perimeter would be 114m. What are the dimentions?

College Algebra  bobpursley, Thursday, January 28, 2010 at 2:18pm
2L+2W=72
2(2W) + 2(L+9)=114
check that.

College Algebra  Ashley, Thursday, January 28, 2010 at 2:33pm
Does this mean that the dimentions are 72 and 114 or do you take it father to find what w & l are which I think might be w=12 and l=24. does that sound right?

College Algebra  bobpursley, Thursday, January 28, 2010 at 3:04pm
Of course you have to find width w, and length L.
I would go back and check W=12, L=24 in the original equations. If they check, you are home bound.
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