document.write( "Question 183824: Thanks for your help by seeing your answer worked out I'm learning by solving linear equations.\r
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document.write( "A jar contains 20 coins, all dimes and nickels. Their value is 1.75 how many nickels in the jar? \n" );
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Algebra.Com's Answer #137931 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! N+D=20 OR N=20-D \n" ); document.write( ".05N+.10D=1.75 \n" ); document.write( ".05(20-D)+.10D=1.75 \n" ); document.write( "1-.05D+.10D=1.75 \n" ); document.write( ".05D=1.75-1 \n" ); document.write( ".05D=.75 \n" ); document.write( "D=.75/.05 \n" ); document.write( "D=15 IS THE NUMBER OF DIMES. \n" ); document.write( "20-15=5 IS THE NUMBER OF NICKELS. \n" ); document.write( "PROOF \n" ); document.write( ".05*5+.10*15=1.75 \n" ); document.write( ".25+1.50=1.75 \n" ); document.write( "1.75=1.75 \n" ); document.write( " |