Answer: 4 times
Step-by-step explanation:
3÷3/4=3/1×4/3=4
4×3/4=3
Answer:
1.6 meters per second.
Step-by-step explanation:
We have been given an position function
and we are asked to find the speed of the rock after 1 second.
Derivative of this function will give us speed function.


Now let us find derivative when t=1,

Therefore, the speed of the rock after 1 second will be 1.6 meters per second.
Answer:
Step-by-step explanation:
6 + 2 = 4, given
- 2 → 5, move two matchsticks, #10 and #12
- 4 → 11, move one matchstick, #18
6 + 5 = 11, correct