6a-3b^2-a+b-4+7a^2
goup like terms
7a^2-3b^2+6a-a+b-4
7a^2-3b^+5a-4
Any one of the runners could be 1st.
Every runner except for the one that was 1st could be 2nd.
Every runner that wasn't 1st or 2nd could be 3rd.
100*99*98=970200 groups.
This involves permutations because order does matter.
Hope this helps!
Answer:
483960
Step-by-step explanation:
484848
- 888
______
483960
1
2
3
6
I hope this helps I'm not exact sure
The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are. In other words it is the sum divided by the count.
