Answer:
She subtracted 7x instead of dividing it. Personally, i wouldn't have done that. I would subtract the 14 first, then divide.
Angle TQS is equal to 74 degrees
Answer:
wave length = 30/6 = 5m
Step-by-step explanation:
wave travels 30m in one second.
wave completes 6 cycles in one second.
You have to show us the graph or chart before we can answer your questions