The period of this Ferris wheel can be calculated as 30 seconds. The amplitude is 25
<h3>How to solve for the period.</h3>
a. We have 60 seconds in a minute
In a minute it makes 2 rotations. The period = 60 secs / 2 rotations
= 30 seconds
b. We have h = 25 - 25cos 
25 - 25cos
We would have the table in the attachment
d. Amplitude
= max - min / 2
= 50 - 0 / 2
= 25
Answer: ($143.69, $156.31)
Step-by-step explanation:
Confidence interval to estimate population mean :

, where
= population standard deviation
n= sample size
Sample mean
z= critical value.
As per given,
n= 40
= $15.50
$150
Critical value for 99% confidence level = 2.576
Then, 99% confidence interval for the population mean:

Hence, the required confidence interval : ($143.69, $156.31)
Step-by-step explanation:
Using the kinematics equation,
v = u + at
where v = Final speed = 15m/s
u = Initial Speed = 30m/s
t = time taken = 10 seconds
a = acceleration.
Substitute v , u and t to find a.

Answer: Here is the explanation. also it it +3y not -3y
Step-by-step explanation:
x+y+4+2y+1=x+3y+5 because
2y+y=3y
so now you have x+3y+4+1
4+1=5
now you have: x+3y+5
if you do not understand, What i am trying to say is, you need to add all of the same things.
Answer:
1.58 meters
Step-by-step explanation: