document.write( "Question 251838: The height of a box is 7 inches. Its length is 6 inches more than its width. Find the length if the volume is 280 cubic inches.
\n" ); document.write( "a) 40 in. b) 7 in. c) 10 in. d) 4 in. e) 13 in.
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Algebra.Com's Answer #183538 by richwmiller(17219)\"\" \"About 
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v=H*W*L
\n" ); document.write( "280=7*W*(6+W)
\n" ); document.write( "280=42W+7W^2
\n" ); document.write( "40=6w+w^2
\n" ); document.write( "W^2+6W-40=0
\n" ); document.write( "(W-4)(W+10)=0
\n" ); document.write( "W=4
\n" ); document.write( "We can only use positive results
\n" ); document.write( "L=6+W
\n" ); document.write( "L=4+6=10
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