They won't arrive exactly when the race starts, but they will arrive before the race starts because, assuming they leave exactly three hours before the race, they can drive a total of 150 miles in three hours (3h*50mi/h). Because they only need to drive 120 miles, they will make it to the race before it starts.
answer:
1.57 cm
Step-by-step explanation:
pi = 3.14
circumference of circle = pi x diameter
3.14 x 2 = 6.28
90/360 x 6.28 = 1.57
the arc length = 1.57 provided that 3.14 is used as pi.
Answer:
Step-by-step explanation:
Since the amplitude of the cosine function is 2, I would put the multiply it by 2. There is no phase shift
The period is 1/2, so it would be 4pi
Plug them in into y=Acos(Bx), y=2cos(4pix)
Answer:
Step-by-step explanation: For number 4, you have to get m by itself. So you add 16 to both sides so you have -24=3m. Then you divide both sides by 3 and get -8.
Sorry I don't know number 5 :(