document.write( "Question 816968: [ Manny has $4.90 in dimes and quarters. He has 7 more dimes than quarters. Write two equations that would be used to solve the system. ] \n" ); document.write( "
Algebra.Com's Answer #491814 by TimothyLamb(4379)\"\" \"About 
You can put this solution on YOUR website!
10d + 25q = 490
\n" ); document.write( "d = q + 7
\n" ); document.write( "---
\n" ); document.write( "NOTE:
\n" ); document.write( "10d + 25q = 490
\n" ); document.write( "can also be expressed as:
\n" ); document.write( "0.10d + 0.25q = 4.90
\n" ); document.write( "either expression can be used to solve the system properly
\n" ); document.write( "---
\n" ); document.write( "Solve and graph linear equations:
\n" ); document.write( "https://sooeet.com/math/linear-equation-solver.php
\n" ); document.write( "---
\n" ); document.write( "Solve quadratic equations, quadratic formula:
\n" ); document.write( "https://sooeet.com/math/quadratic-formula-solver.php
\n" ); document.write( "---
\n" ); document.write( "Convert fractions, decimals, and percents:
\n" ); document.write( "https://sooeet.com/math/fraction-decimal-percent.php
\n" ); document.write( "---
\n" ); document.write( "Calculate and graph the linear regression of any data set:
\n" ); document.write( "https://sooeet.com/math/linear-regression.php \n" ); document.write( "
\n" );