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OpenStudy (anonymous):
In the diagram, m∠COE = 55°. If m∠2 = 2x and m∠3 = x+10, what is the measure of angle 2?
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OpenStudy (anonymous):
OpenStudy (kobeni-chan):
Subtract 55 from 180 total degrees of a triangle to get 125. Put 2x and x + 10 together... 3x + 10 = 125 Subtract 10 from both sides... 3x = 115 Divide by 3... x = 38.3333 Now to find the measure of angle 2... 38.333(2) = 76.66666 Don't know if that's a multiple choice question or not, but that's what I got
OpenStudy (anonymous):
15 30 45 60 Are the answer choices.
OpenStudy (kobeni-chan):
D: I guess I did it wrong then lol
OpenStudy (kobeni-chan):
oh ok I got it this time: so 3x + 10 = 55 Subtract 10 from each side... 3x = 45 Divide by 3... x = 15
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