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OpenStudy (anonymous):
Two supplementary angles have measures of 9x degrees and 3x degrees. What is the measure of the longer angle?
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OpenStudy (danjs):
supplementary means they add up to a straight line or 180 degrees
OpenStudy (danjs):
3x + 9x = 180
OpenStudy (anonymous):
Thank you so much! very helpful!
OpenStudy (emmatassone):
\[x(3+9)=180\rightarrow x=15\]
OpenStudy (emmatassone):
longer angle= 15*9=135º
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