document.write( "Question 94499: Hello, \r
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document.write( "I need help solving this problem:\r
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document.write( "A rectangle is 6 centimeters wide and 9 centimeters long. If the length and width are increased by the same amount, the area is increased by 100 square centimeters. Find the new dimensions.\r
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Algebra.Com's Answer #68832 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! 9*6=54 ... (9+x)(6+x)=54+100 ... 54+9x+6x+x^2=154 ... x^2+15x-100=0\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "factoring gives (x+20)(x-5)-0 ... x+20=0 ... x=-20 ... x-5=0 ... x=5\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "new dimensions are 6+5=11 and 9+5=14 \n" ); document.write( " |