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:
a=28
Step-by-step explanation:
a+20=48
a=48-20
a=28
1 hiker left the trail while 1 is still on it, so theres 1 hiker on the trail.
