document.write( "Question 1002096: I have been stuck to this question on my math exam..can you solve this for me?\r
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document.write( "Find the dimension of a rectangle with an area of 27 square meters, if the length of a rectangle is three more than twice the width.\r
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Algebra.Com's Answer #619090 by Cromlix(4381)![]() ![]() You can put this solution on YOUR website! Hi there, \n" ); document.write( "Make the width = 'x' \n" ); document.write( "Length = 3 + 2x \n" ); document.write( "Area of rectangle = Length x width \n" ); document.write( "27 = (3 + 2x)(x) \n" ); document.write( "27 = 3x + 2x^2 \n" ); document.write( "2x^2 + 3x - 27 = 0 \n" ); document.write( "Factorise: \n" ); document.write( "Using Quadratic formula: \n" ); document.write( " \n" ); document.write( "a = 2: b = 3: c = -27: \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "[[[x = -3+sqrt(225))/4}}} or [[[x = -3-sqrt(225))/4}}} \n" ); document.write( "x = 3 or -4.5(Discount as -ve) \n" ); document.write( "So, Width = 3.0m \n" ); document.write( "Length = 9.0m \n" ); document.write( "Hope this helps :-) \n" ); document.write( " |