ajazademoore112
ajazademoore112 ajazademoore112
  • 25-06-2018
  • Mathematics
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sqdancefan
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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