Answer:
1. X= 4
2. X= 1
3. X= 3
4. X= 5
5. X= 7
6. X= -3/4
7. X= 6
8. X= 5
Step-by-step explanation:
the awnser is either a or c
i hope my awnser helps
Its 40 degrees
60+80=140
180-140=40 (a straight line is always 180 degrees)
Hope it helped