document.write( "Question 829668: Flying with the wind a plane went 183 km/h. Flying into the same wind the plane only went 141 km/h. Find the speed of the plane in still air and the speed of the wind. \n" ); document.write( "
Algebra.Com's Answer #500014 by TimothyLamb(4379)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "x + y = 183
\n" ); document.write( "x - y = 141
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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 = airplane speed 162 kph
\n" ); document.write( "y = wind speed 21 kph
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\n" ); document.write( "system matrix
\n" ); document.write( "1 1
\n" ); document.write( "1 -1
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\n" ); document.write( "inverse of system matrix
\n" ); document.write( "0.5 0.5
\n" ); document.write( "0.5 -0.5
\n" ); document.write( "---
\n" ); document.write( "determinant of system matrix = -2
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\n" ); document.write( "Solve systems of linear equations up to 6-equations 6-variables:
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