document.write( "Question 825263: [ In a parallelogram one angle is four times its adjacent angle. Find all the angles of the parallelogram. ] \n" ); document.write( "
Algebra.Com's Answer #497171 by TimothyLamb(4379)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "x = 4y
\n" ); document.write( "x + y = 180
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\n" ); document.write( "put the system of linear equations into standard form
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\n" ); document.write( "x - 4y = 0
\n" ); document.write( "x + y = 180
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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 = two opposite angles are 144 degrees each
\n" ); document.write( "y = the other two angles are 36 degrees each
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\n" ); document.write( "system matrix
\n" ); document.write( "1 -4
\n" ); document.write( "1 1
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\n" ); document.write( "inverse of system matrix
\n" ); document.write( "0.2 0.8
\n" ); document.write( "-0.2 0.2
\n" ); document.write( "---
\n" ); document.write( "determinant of system matrix = 5
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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 6-equations 6-variables:
\n" ); document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php \n" ); document.write( "
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