document.write( "Question 827342: The perimeter of a rectangle is 124cm.If the length is 12 more than the width, find the length and the width.
\n" ); document.write( " \n" ); document.write( "
Algebra.Com's Answer #498613 by TimothyLamb(4379)\"\" \"About 
You can put this solution on YOUR website!
---
\n" ); document.write( "x = length
\n" ); document.write( "y = width
\n" ); document.write( "---
\n" ); document.write( "2x + 2y = 124
\n" ); document.write( "x = y + 12
\n" ); document.write( "---
\n" ); document.write( "put the system of linear equations into standard form:
\n" ); document.write( "---
\n" ); document.write( "2x + 2y = 124
\n" ); document.write( "x - y = 12
\n" ); document.write( "---
\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
\n" ); document.write( "---
\n" ); document.write( "solution:
\n" ); document.write( "x = length = 37 cm
\n" ); document.write( "y = width = 25 cm
\n" ); document.write( "---
\n" ); document.write( "system matrix
\n" ); document.write( "2 2
\n" ); document.write( "1 -1
\n" ); document.write( "---
\n" ); document.write( "inverse of system matrix
\n" ); document.write( "0.25 0.5
\n" ); document.write( "0.25 -0.5
\n" ); document.write( "---
\n" ); document.write( "determinant of system matrix = -4
\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( "Solve systems of linear equations up to 6-equations 6-variables:
\n" ); document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php \n" ); document.write( "
\n" );