Answer:
5) 15120
6) 11880
7) 336
Step-by-step explanation:
The formula for permutation where mPn is m!/(m-n)!
Applying this to question 5, we get 9!/4!, which is 15120.
For question 6, we get 12!/8!, which is 11880.
For question 7, we get 8!/5!, which is 336.
Answer:
2t + 16
Step-by-step explanation:
1. 0 seconds and 16 feet.
2. 1 second and 18 feet.
3. 2 seconds and 20 feet.
4. 3 seconds and 22 feet.
5. 6 seconds and 28 feet.
Therefore, the answer is 2t + 16.