Answer:
The measure of angle B would be 100°
Step-by-step explanation:
Supplementary means two angles add up to 180 degrees. Let's say A+B=180. Since we know what A is, we can substitute that in, B+80=180. Now solve. B=100
180-109= 171
Angel 8 is 171 degrees
500-124=376
If 124 students liked snickers and 500 got surveyed then if we subtract how many got surveyed by how many liked snickers the answer would be 376.