there is an error because -9 x 1 = -9 not -1. But I would assume that you multiply -9×-1 and then -9×-2 ect.
Answer:
21
Step-by-step explanation:
subtract 3t from both sides
multiply both sides by 3
so 6t = -21
Should be 64 degrees as the two angles are on a plane which is 180 degrees. and 180 minus what is given (116) would come out to 64.
Answer:B
Step-by-step explanation: