Answer:
b, since the others have the input and output on the wrong sides
42,812 and 62,812! You just add and subtract 10,000 from 52,812 and you will get the answer! Hope this helps!
Answer:
6
Step-by-step explanation:

Answer:
1.25 seconds
Step-by-step explanation:
Cosine is a maximum at cos(0) = 1, and a minimum at cos(π) = -1.
At the maximum:
8π/5 t = 0
t = 0
At the minimum:
8π/5 t = π
t = 5/8
t = 0.625
The time from maximum to minimum is 0.625 seconds. Therefore, the time from minimum back to maximum is also 0.625 seconds. So the total time is:
0.625 + 0.625 = 1.25