document.write( "Question 140310: I have a worksheet that states if angle 1 and angle2 are complementary angles and m alngle 1=5x-9 and m angle 2=4x, find the measure of the two angles.\r
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document.write( "I'm not sure if it is right, but i went: (5x-9)+(4x)=90
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document.write( " 5x+4x-9=90
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document.write( " 9x-9=180
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document.write( " +9 +9
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document.write( " 9x=99
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document.write( " 9x/9 =99/9
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document.write( " x= 11\r
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document.write( "the next one i had a question on said: in the figure AB and CD are parallel lines cut by transversal EF. If m angle AEF =47, find m angle DFE.\r
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document.write( "I did: m anlge AEF = m angle DFE = 180
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document.write( " 47 + m angle DFE =180
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document.write( " -47 -47
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document.write( " m angle DFE = 133
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Algebra.Com's Answer #102183 by Earlsdon(6294)![]() ![]() ![]() You can put this solution on YOUR website! I) If two angles (5x-9) and (4x) are complementary, their sum is 90 degrees. \n" ); document.write( "(5x-9)+4x = 90 \n" ); document.write( "9x-9 = 90 \n" ); document.write( "9x = 99 Divide both sides by 9 \n" ); document.write( "x = 11 \n" ); document.write( "Angle 1: \n" ); document.write( "5x-9 = 5(11)-9 = 55-9 = 46 \n" ); document.write( "Angle 1 is 46 degrees. \n" ); document.write( "Angle 2: \n" ); document.write( "4x = 4(11) = 44 \n" ); document.write( "Angle 2 = 44 degrees. \n" ); document.write( "Check: \n" ); document.write( "46+44 = 90 \n" ); document.write( "II) The best I can figure out without the actual diagram is that the two angles in your problem AEF and DFE, are alternate interior angles, and alternate interior angles are congruent (equal). \n" ); document.write( " |