Answer:
13
Step-by-step explanation:
All you do is divide 39 by 3 and that gets 13
Since they gave you the boxes you need the first number to be zero therefore having the quotient starting with zero. Then you may divide normally
If he has lung cancer, chances of him being a smoker is likely
Because all three angles add up to 180 (a line) it would be 65+65, or 130 degrees. Then subtract 130 from 180. your missing angle is 50 degrees