Add the two speeds together, then divide the two, this gives the average speed. Hope this was helpful!
Sphere surface area is A=4pi*r^2. So r is sqrt(A/4pi)
r=4cm. So d=8cm
Here ya go. I hope this helps! :) (It was much easier to do this than to try and type it out, in my opinion)
Answer:
3. There is a phase shift (Horizontal shift).
Step-by-step explanation:
Use desmos to help you
Graph
y=sin(x+60)
y=sin(x)
