document.write( "Question 998321: I've got an equation that I can't seem to get the right answer. Word problems are not a strength of mine so I need some help. The question is:
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document.write( "Length of a rectangle is twice its width. If area is 120 sq meters, find length and width. Does l=2(w) or l=w^2? Since A=L*W, my equation would look like this: 120=2w*w. I would subtract 120 from both sides to get 2w*w-120=0 or I wouldn't do that. Can you help me? \n" );
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Algebra.Com's Answer #616123 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Just write an equation for each statement \n" ); document.write( "Substitute \n" ); document.write( "Follow the rules of algebra to solve the equation \n" ); document.write( ": \n" ); document.write( "Length of a rectangle is twice its width. \n" ); document.write( "L = 2W \n" ); document.write( " If area is 120 sq meters, find length and width. \n" ); document.write( "L * W = 120 \n" ); document.write( "replace L with 2W from the 1st statement \n" ); document.write( "2W * W = 120 \n" ); document.write( "2W^2 = 120 \n" ); document.write( "Simplify, divide both sides by 2 \n" ); document.write( "W^2 = 60 \n" ); document.write( "Find the square root of both sides \n" ); document.write( "W = \n" ); document.write( "W = 7.746 m is the width \n" ); document.write( "Then using the 1st equation, find L \n" ); document.write( "L = 2(7.746) \n" ); document.write( "L = 15.492 m is the length \n" ); document.write( ": \n" ); document.write( "Check the solutions by finding the area using these values \n" ); document.write( "15.492 * 7.746 = 120.00 \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Was this understandable to you? \n" ); document.write( " |