document.write( "Question 825452: [ the perimeter of a rectangle is 120 feet. if the length is four times the width, what are the dimensions of the rectangle? ] \n" ); document.write( "

Algebra.Com's Answer #497299 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 = 120
\n" ); document.write( "x = 4y
\n" ); document.write( "---
\n" ); document.write( "put the system of linear equations into standard form
\n" ); document.write( "---
\n" ); document.write( "2x + 2y = 120
\n" ); document.write( "x - 4y = 0
\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 = 48 ft
\n" ); document.write( "y = width = 12 ft
\n" ); document.write( "---
\n" ); document.write( "system matrix
\n" ); document.write( "2 2
\n" ); document.write( "1 -4
\n" ); document.write( "---
\n" ); document.write( "inverse of system matrix
\n" ); document.write( "0.4 0.2
\n" ); document.write( "0.1 -0.2
\n" ); document.write( "---
\n" ); document.write( "determinant of system matrix = -10
\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 4-equations 4-variables:
\n" ); document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php \n" ); document.write( "

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