document.write( "Question 371470: PLEASE HELP ME!!\r
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document.write( "Find two numbers whose sum is 25 and the sum of whose reciprocals is 1/4. \n" );
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Algebra.Com's Answer #264614 by amoresroy(361)![]() ![]() You can put this solution on YOUR website! Find two numbers whose sum is 25 and the sum of whose reciprocals is 1/4.\r \n" ); document.write( "\n" ); document.write( "Let x = the 1st number \r \n" ); document.write( "\n" ); document.write( "25-x = the 2nd number\r \n" ); document.write( "\n" ); document.write( "1/x + 1/(25-x)= 1/4 \n" ); document.write( "multiply both sides by 4(x)(25-x) \n" ); document.write( "4(25-x) + 4x = x(25-x) \n" ); document.write( "100-4x +4x = 25x -x^2 \n" ); document.write( " 100 = 25x - x^2 \n" ); document.write( "x^2-25x+100 = 0 \n" ); document.write( "solve by factoring \n" ); document.write( "(x-20)(x-5) = 0\r \n" ); document.write( "\n" ); document.write( "x-20 = 0 \n" ); document.write( "x = 20\r \n" ); document.write( "\n" ); document.write( "x-5 = 0 \n" ); document.write( "x = 5\r \n" ); document.write( "\n" ); document.write( "The numbers are 20 & 5 \n" ); document.write( " |