document.write( "Question 257405: the length of a rectangle is three cm longer than twice the width and that the perimeter of the rectangle is 90 cm
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document.write( "Set up an equation for the perimeter involving only W, the width of the rectangle
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document.write( "Ive got
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document.write( "90=2l+2w
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document.write( "90=2(2w)+2(w)
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document.write( "90=4w+2w
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document.write( "90=6w
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document.write( "after that i dont know and im not sure if i did it right in the first place \n" );
document.write( "
Algebra.Com's Answer #189329 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! What about the 3 cm? \n" ); document.write( "L=3+2w \n" ); document.write( "p=2w+2L \n" ); document.write( "p=2w+2(3+2w)\r \n" ); document.write( "\n" ); document.write( "p=2w+6+4w \n" ); document.write( "p=6+6w \n" ); document.write( "90=6+6w \n" ); document.write( "84=6w \n" ); document.write( "14=w \n" ); document.write( "L=3+2w=3+28=31 \n" ); document.write( "p=62+28=90 \n" ); document.write( " |