document.write( "Question 389334: 1. It takes Bill 6 hours longer than John to plow a certain field. Together they can plow it in 4 hours. How long would it take each man alone to plow the field?\r
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document.write( "2. Using a graphing calculator find the roots of the equation to the nearest hundredth:
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document.write( "x^7+x^5-2x^3+3x^2-1=0 \n" );
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Algebra.Com's Answer #482256 by Finavon(81)![]() ![]() ![]() You can put this solution on YOUR website! John t hrs \n" ); document.write( "Bill (t+6) hrs \n" ); document.write( "Together 4 hrs \n" ); document.write( "Each contribute to this whole \n" ); document.write( " \n" ); document.write( "Multiply each side by t and by t+6 \n" ); document.write( " 4(t+6) + 4t = t(t+6) \n" ); document.write( "4t + 24 + 4t = t^2 + 6t \n" ); document.write( "Rearrange \n" ); document.write( " \n" ); document.write( "Solves as (t+4)(t-6) with t=6 as only real solution \n" ); document.write( "John takes 6 hrs; Bill takes 12 hrs \n" ); document.write( "Check: \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "2. Using a graphing calculator find the roots of the equation to the nearest hundredth: \n" ); document.write( "x^7+x^5-2x^3+3x^2-1=0 \n" ); document.write( " |