document.write( "Question 863389: 10. Jen and Jacob want to put a cement deck around their pool. Use the figure below to calculate the area of the deck. If cement costs $4.75 per square foot, how much is the cost of the deck? Round to the nearest hundredth. \r
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document.write( "pool is width x+3 length is 3x-4\r
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document.write( "deck is width 3x-2 length is 2x+6 \r
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Algebra.Com's Answer #520415 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! 10. Jen and Jacob want to put a cement deck around their pool. \n" ); document.write( " Use the figure below to calculate the area of the deck. \n" ); document.write( " If cement costs $4.75 per square foot, how much is the cost of the deck? Round to the nearest hundredth.\r \n" ); document.write( "\n" ); document.write( "pool is width x+3 length is 3x-4 \n" ); document.write( "deck is width 3x-2 length is 2x+6 \n" ); document.write( ": \n" ); document.write( "We should be able to find x, the difference between the deck width and the pool width should equal the difference between the deck length and pool length \n" ); document.write( "width (3x-2) - (x+3) = (2x-5) \n" ); document.write( "length (2x+6) - (3x-4) = (-x+10) \n" ); document.write( "therefore \n" ); document.write( "2x - 5 = -x + 10 \n" ); document.write( "2x + x = 10 + 5 \n" ); document.write( "3x = 15 \n" ); document.write( "x = 5 \n" ); document.write( ": \n" ); document.write( "Find the overall dimensions and the deck dimensions, replace x with 5 \n" ); document.write( "Deck: 13 by 16 an area of 208 \n" ); document.write( "Pool: 8 by 11 an area of 88 \n" ); document.write( "then \n" ); document.write( "208 - 88 = 120 sq/ft is the area of the deck \n" ); document.write( ": \n" ); document.write( " If cement costs $4.75 per square foot, how much is the cost of the deck? Round to the nearest hundredth. \n" ); document.write( "120 * 4.75 = $570.00 \n" ); document.write( " \n" ); document.write( " |