document.write( "Question 935348: Two adjacent angles of a parallelogram are in ratio 4:5. Find all the angles of the parallelogram. Justify your answer with proper steps. \n" ); document.write( "
Algebra.Com's Answer #568580 by TimothyLamb(4379)\"\" \"About 
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x = first angle in degrees
\n" ); document.write( "y = second angle in degrees
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\n" ); document.write( "adjacent angles of a parallelogram are supplementary:
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\n" ); document.write( "x + y = 180
\n" ); document.write( "x/y = 4/5
\n" ); document.write( "x = (4/5)y
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\n" ); document.write( "put the system of linear equations into standard form
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\n" ); document.write( "x + y = 180
\n" ); document.write( "x - 0.8y = 0
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\n" ); document.write( "solution:
\n" ); document.write( "x = first angle in degrees = 80
\n" ); document.write( "y = second angle in degrees = 100
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