Answer:
i think it is 345 but not sure
Step-by-step explanation:
Answer:
B is correct
Step-by-step explanation:

Re-write with common denominator, in this case 6:

Add:
Answer:
b=12, y=53.13°, and x=36.87° brainliest pls if correct
Answer:
8. 51
9. 89
10. 20
11. 35
Step-by-step explanation:
sum of the internal angles in a triangle must always total 180 degrees
trick: be careful, sometimes they give you the internal angle, sometimes the external angle