ajazademoore112
ajazademoore112
25-06-2018
Mathematics
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sqdancefan
sqdancefan
30-06-2018
The sum of angles of a triangle is 180°.
(y +10) +(2y) +50 = 180
3y + 60 = 180
3y = 120
y = 40
The appropriate choice is ...
B. 40°
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