9: B right
10: C obtuse
11: B right
12: B right
I hope they are right! Sorry if they are not!
9. 31 + 5 = 36
10. 16 - 4 = 12
12. 9
13. 44 + 34 = 78
14. 101 - 1 = 100
15. -539 ???
16. 15 ??
17. |-435| = 435
The answer is b hope it helped
Answer:
what is this
Step-by-step explanation:
