document.write( "Question 881698: word problem
\n" ); document.write( "a cashier has 25 coins. She has nickels, dimes and quarters. The total amount is $4.90. The dimes are 1 less than twice the number of nickels. I need to show the MATRIX, solve the problem and write a sentence at the end of the problem explaining the answer.
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Algebra.Com's Answer #532401 by josgarithmetic(39621)\"\" \"About 
You can put this solution on YOUR website!
n, d, q, for nickels, dimes, quarters.\r
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\n" ); document.write( "\n" ); document.write( "\"d=-1%2B2n\";
\n" ); document.write( "\"n%2Bd%2Bq=25\";
\n" ); document.write( "\"0.05n%2B0.10d%2B0.25=4.90\";
\n" ); document.write( "Changing to adjust the form of the first equation,
\n" ); document.write( "\"-2n%2Bd=-1\"
\n" ); document.write( "\"2n-d%2B0q=1\"\r
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\n" ); document.write( "\n" ); document.write( "Resulting Matrix:
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\n" ); document.write( "\n" ); document.write( "Best to multiply the third row by 100 so you have all integers for the matrix:
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\n" ); document.write( "\n" ); document.write( "... and divide row 3 by 5 to have the smallest integers:
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\n" ); document.write( "\n" ); document.write( "Can you continue what you need to do from here?\r
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