document.write( "Question 693982: the length of a rectangle is 3 times its width. if the width is diminished by 1 meter and the length is increased by 3 meters, the area of the rectangle that is formed is 72 square meters. find the dimensions of the original rectangle. \n" ); document.write( "
Algebra.Com's Answer #427679 by JBarnum(2146)\"\" \"About 
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L=Length W=Width A=Area
\n" ); document.write( "L=3W
\n" ); document.write( "so LW=A is really 4W=A or 3W(W)=A
\n" ); document.write( "W-1
\n" ); document.write( "L+3=3W+3
\n" ); document.write( "A=72 for second rectangle
\n" ); document.write( "\"%283W%2B3%29%28W-1%29=72\"
\n" ); document.write( "\"3W%5E2-3=72\"
\n" ); document.write( "\"3W%5E2-75=0\"
\n" ); document.write( "do the quadratic formula
\n" ); document.write( "to get \"3%28W-5%29%28W%2B5%29=0\"
\n" ); document.write( "two possible answers are 5,-5 however there can not be negative lengths so possitive 5 is what W equals
\n" ); document.write( "L=3W so L=15 and W=5
\n" ); document.write( "so A=75\r
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