document.write( "Question 825492: one solution is 80% acid and another one is 20 % acid . how much of each solution is needed to mak one hundred galons that is 65 %
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Algebra.Com's Answer #497343 by TimothyLamb(4379)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "80x + 20y = 65*100
\n" ); document.write( "x + y = 100
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\n" ); document.write( "put the system of linear equations into standard form
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\n" ); document.write( "80x + 20y = 6500
\n" ); document.write( "x + y = 100
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\n" ); document.write( "copy and paste the above linear system in standard form into this matrix-method solver:
\n" ); document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php
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\n" ); document.write( "solution:
\n" ); document.write( "x = 75 gallons of 80%
\n" ); document.write( "y = 25 gallons of 20%
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\n" ); document.write( "system matrix
\n" ); document.write( "80 20
\n" ); document.write( "1 1
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\n" ); document.write( "inverse of system matrix
\n" ); document.write( "0.016666667 -0.33333333
\n" ); document.write( "-0.016666667 1.3333333
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\n" ); document.write( "determinant of system matrix = 60
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\n" ); document.write( "Solve and graph linear equations:
\n" ); document.write( "https://sooeet.com/math/linear-equation-solver.php
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\n" ); document.write( "Solve quadratic equations, quadratic formula:
\n" ); document.write( "https://sooeet.com/math/quadratic-formula-solver.php
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\n" ); document.write( "Solve systems of linear equations up to 4-equations 4-variables:
\n" ); document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php \n" ); document.write( "
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