document.write( "Question 909572: Question: A rectangle has an area of 330 meters squared. one side is 7 meters longer than the other. what are the dimensions of the rectangle?\r
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document.write( "My Attempt: x(x+7) = 330
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document.write( " x^2 + 7x = 330
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document.write( "square root both sides x + 7x = 18.2
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document.write( " 8x/8 = 18.2/8
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document.write( " x = 2.25
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document.write( "It's wrong. \n" );
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Algebra.Com's Answer #551922 by JulietG(1812)![]() ![]() You can put this solution on YOUR website! Area = length * width \n" ); document.write( "A = 330m^2 \n" ); document.write( "330 = x(x+7) \n" ); document.write( "330 = x^2 + 7x \n" ); document.write( "Subtract 330 from each side \n" ); document.write( "x^2 + 7x -330 = 0 \n" ); document.write( "Factor \n" ); document.write( "(x+22)(x-15) \n" ); document.write( "Since a measurement can't be a negative number, the only possibility is 15. \n" ); document.write( "One side is 15. Therefore the other side is 22. \n" ); document.write( "22 * 15 = 330 \n" ); document.write( "22 is 7 more than 15. \n" ); document.write( " \n" ); document.write( " |