Answer:
9+11s
Step-by-step explanation:
9+18s-7s
=9+11s
You can't add 9 and 11s because they are different variables
71
62
88
38
89
76
-15 (i'm inversing everything to make it simple)
The mean is -69.28
Answer:
27
Step-by-step explanation:
54/2
27x2=54 and they said 2 times