Answer:
(-2,0)
Step-by-step explanation:
Answer:
Step-by-step explanation:
θ=l/r
l=rθ
r=l/θ,where θ is in radians.
Answer:
2.6 ft/s
Step-by-step explanation:
Given that a soccer ball kicked into the air reaches 15 feet in 3 second. The first rate or speed will be:
Rate 1 = 15/3 = 5 feet/s
and falls to 3 feet after 5 seconds. Also, the second rate or second speed will be:
Rate 2 = ( 15 - 3 ) / 5
Rate 2 = 12 / 5
Rate 2 = 2.4 ft/ s
What is the rate of change between the 3rd second and the 5th second? That is, the change in speed. Which can be expressed as:
The rate of change = 5 - 2.4
The rate of change = 2.6 ft/s
Answer:
CI = x ± 2.58 (s / √n)
Step-by-step explanation:
The confidence interval is the mean plus or minus the margin of error. The margin of error is the critical value times the standard error. For a normal distribution, the critical value is the z-score at the given confidence level. The standard error is the standard deviation divided by the square root of the sample size.
CI = x ± z (s / √n)
At 99% confidence, z = 2.58.
CI = x ± 2.58 (s / √n)
The answer would be (1,3)
