A) control group, they did not also survey 10 other ppl who took a placebo
Answer: it is b
Step-by-step explanation:
I think I might be right I hope I am if not I’m so sorry
Answer:
The tires are spinning at 660.49 revolutions per minute.
Step-by-step explanation:
The speed of the tires (v) is the same that the speed of the car, so to find the angular velocity of the tires we need to use the equation:

Where:
r: is the radius of the tires = d/2 = 28 inches/2 = 14 inches
Therefore, the tires are spinning at 660.49 revolutions per minute.
I hope it helps you!
The answer to number 5 is 128
4x+499=660
X=40.25
X equeals the amount for each game.