document.write( "Question 617437: 1. if a box is to be 2 feet high, and the width is to be three feet less than its length. If it needs to hold a volume of 80 cubic feet, find the length and width of the box.
\n" ); document.write( "Please help and show me how to solve this! I need an answer ASAP!!
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Algebra.Com's Answer #388331 by MathTherapy(10555)\"\" \"About 
You can put this solution on YOUR website!
1. if a box is to be 2 feet high, and the width is to be three feet less than its length. If it needs to hold a volume of 80 cubic feet, find the length and width of the box.
\n" ); document.write( "Please help and show me how to solve this! I need an answer ASAP!!
\n" ); document.write( "Thanks!\r
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\n" ); document.write( "\n" ); document.write( "Volume of a rectangular prism (box) = length * width * height\r
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\n" ); document.write( "\n" ); document.write( "Let length be L
\n" ); document.write( "Then width = L - 3
\n" ); document.write( "Height = 2\r
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\n" ); document.write( "\n" ); document.write( "We now have: Volume = length * width * height, OR
\n" ); document.write( "80 = L(L - 3)(2)\r
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\n" ); document.write( "\n" ); document.write( "80 = 2L(L - 3)\r
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\n" ); document.write( "\n" ); document.write( "\"80+=+2L%5E2+-+6L\"\r
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\n" ); document.write( "\n" ); document.write( "\"2%2840%29+=+2%28L%5E2+-+3L%29\" ------ Factoring out GCF, 2\r
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\n" ); document.write( "\n" ); document.write( "\"40+=+L%5E2+-+3L\"\r
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\n" ); document.write( "\n" ); document.write( "\"L%5E2+-+3L+-+40+=+0\"\r
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\n" ); document.write( "\n" ); document.write( "(L - 8)(L + 5) = 0\r
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\n" ); document.write( "\n" ); document.write( "L, or length = \"highlight_green%288%29\", or L = - 5 (ignore as measurement CANNOT be negative).\r
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\n" ); document.write( "\n" ); document.write( "Since length = 8, then width = 8 - 3, or \"highlight_green%285%29\"\r
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\n" ); document.write( "Send comments and “thank-yous” to “D” at MathMadEzy@aol.com
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