11.21 miles because you divide 33.63 by 3 and you'll get your answer.
Step-by-step explanation:

Answer:
period = 2
Step-by-step explanation:
The period is the measure of 1 complete cycle of the wave
The wave enters at x = 0 , y = - 0.5
After 1 cycle the wave is at x = 2, y = - 0.5
period = 2 - 0 = 2
Answer:

Step-by-step explanation:
Step 1: Add -Hy to both sides.
Step 2: Divide both sides by A.