Complementary means the two angles add up to 90 degrees. Do 90 - 79 to find the other angle.
It's 11 degrees.
3:1 should be the answer.
Answer: Below
Step-by-step explanation:
125% is essentially 1.25 or 125/100.
In mixed number form it's:

43 maybe? And if I’m wrong in advance-Sorry
12.8 miles would take the 16 friends to split the trip into 16 parts