document.write( "Question 493890: I have this Geometry/Algebra word problem that I'm not even sure is solvable, I and my entire family have racked our brains over it for hours. Here it goes.\r
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document.write( "a) Define variables
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document.write( "b) Give and equation
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document.write( "c) Give solution\r
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document.write( "A rectangle is constructed. The length of this rectangle is double the width. Then a new rectangle is made by increasing each side by 3 meters. The perimeter of the new rectangle is 2 meters greater than 4 times the length of the old rectangle. Find the dimensions of the original rectangle. \n" );
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Algebra.Com's Answer #335488 by Theo(13342)![]() ![]() You can put this solution on YOUR website! A rectangle is constructed. The length of this rectangle is double the width. Then a new rectangle is made by increasing each side by 3 meters. The perimeter of the new rectangle is 2 meters greater than 4 times the length of the old rectangle. Find the dimensions of the original rectangle.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "first rectangle:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "L = 2x \n" ); document.write( "W = x\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "second rectangle:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "L = 2x + 3 \n" ); document.write( "W = x + 3 \n" ); document.write( "P = 2(2x+3) + 2(x+3) = 4x+6+2x+6 = 6x+12\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "L = length \n" ); document.write( "W = width \n" ); document.write( "P = perimeter\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "P (second rectangle) = 4 * (Length of first rectangle) + 2\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "this becomes:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "6x+12 = 4(2x) + 2 which becomes: \n" ); document.write( "6x+12 = 8x+2 \n" ); document.write( "subtract 6x from both sides of the equation to get: \n" ); document.write( "12 = 2x + 2 \n" ); document.write( "subtract 2 from both sides of the equation to get: \n" ); document.write( "10 = 2x \n" ); document.write( "divide both sides of the equation by 2 to get: \n" ); document.write( "x = 5\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "when x = 5:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "length of first rectangle becomes 2x = 10 \n" ); document.write( "width of first rectangle becomes x = 5\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "length of second rectangle becomes 2x + 3 = 13 \n" ); document.write( "width of second rectangle becomes x + 3 = 8\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "perimeter of second rectangle becomes 2*13 + 2*8 = 26+16 = 42\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "4 times length of first rectangle plus 2 becomes 4*10 + 2 = 42\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "requirements of problem are satisfied.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "answer is that the dimensions of the original rectangle are:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "length = 10 \n" ); document.write( "width = 5\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |