document.write( "Question 966879: Find two numbers to some is 0.71 and whose product is 0.1218
\n" ); document.write( "Find two numbers whose difference is .03 and who some is .79
\n" ); document.write( "Find two numbers who some is 1.33 and whose difference is .09 Thank you very much
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Algebra.Com's Answer #590966 by rothauserc(4718)\"\" \"About 
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A) Find two numbers to some is 0.71 and whose product is 0.1218
\n" ); document.write( "x + y = 0.71
\n" ); document.write( "xy = 0.1218
\n" ); document.write( "solve second equation for x
\n" ); document.write( "x = 0.1218 / y
\n" ); document.write( "substitute for x in first equation
\n" ); document.write( "(0.1218 / y) + y = 0.71
\n" ); document.write( "multiply both sides of = by y
\n" ); document.write( "0.1218 +y^2 = 0.71y
\n" ); document.write( "y^2 -0.71y + 0.1218 = 0
\n" ); document.write( "factor the polynomial
\n" ); document.write( "(y -0.42) * (y -0.29) = 0
\n" ); document.write( "there are two solution sets
\n" ); document.write( "x = 0.29, y = 0.42
\n" ); document.write( "x = 0.42, y = 0.29
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\n" ); document.write( "B) Find two numbers whose difference is .03 and who some is .79
\n" ); document.write( "x - y = 0.03
\n" ); document.write( "x + y = 0.79
\n" ); document.write( "solve frist equation for x
\n" ); document.write( "x = y +0.03
\n" ); document.write( "substitute for x in second equation
\n" ); document.write( "y +0.03 +y = 0.79
\n" ); document.write( "2y = 0.76
\n" ); document.write( "y = 0.38
\n" ); document.write( "x = 0.41, y = 0.38
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\n" ); document.write( "C) Find two numbers who some is 1.33 and whose difference is .09
\n" ); document.write( "x + y = 1.33
\n" ); document.write( "x - y = 0.09
\n" ); document.write( "solve second equation for x
\n" ); document.write( "x = y +0.09
\n" ); document.write( "substitute for x in first equation
\n" ); document.write( "y +0.09 +y = 1.33
\n" ); document.write( "2y = 1.24
\n" ); document.write( "y = 0.62
\n" ); document.write( "x = 0.71, y = 0.62
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