document.write( "Question 601676: The area of a rectangular slab of sidewalk is 45square feet. its length is 3 feet more than 4times the width. find the length and width.
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document.write( "I have 4w+3=L but i dont really know what to do..... \n" );
document.write( "
Algebra.Com's Answer #379980 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! The area of a rectangular slab of sidewalk is 45square feet. its length is 3 feet more than 4times the width. find the length and width. \n" ); document.write( "I have 4w+3=L but i dont really know what to do \n" ); document.write( "--------------- \n" ); document.write( "4w+3=L \n" ); document.write( "L*W = 45 \n" ); document.write( "Sub for L \n" ); document.write( "(4W+3)*W = 45 \n" ); document.write( "4W^2 + 3W - 45 = 0 \n" ); document.write( "(W - 3)*(4W + 15) = 0 \n" ); document.write( "W = 3 \n" ); document.write( "L = 15 \n" ); document.write( " \n" ); document.write( " |