Answer:
829
Step-by-step explanation:
Data provided in the question:
margin of error of E = $4
Confidence level = 90%
Standard deviation = $70
Now,
Sample size, n=
for 90% confidence level, z value = 1.645 [from standard z-table]
Therefore,
n =
= 28.7875²
= 828.72 ≈ 829
Hence,
The correct answer is option (D) 829
3,916 is the right answer
Answer:
New time to find all balls = 23.75 hours
Step-by-step explanation:
Given:
Total time = 95 hour
Total people = 1 Lillian + 3 friends = 4
Find:
New time to find all balls
Computation:
New time to find all balls = 95 / 4
New time to find all balls = 23.75 hours
I'm guessing the angle is supposed to have measure 60º, not 600º... In this case,
That is, the length of the arc we care about occurs with the circle's circumference in the same ratio as the measure of the central angle it subtends occurs with one complete revolution of the circle. Then with , we have
so the answer is C.
Answer: She babysat 7 hours
Step-by-step explanation:if you take the knowledge you have; she charges 6$ per hour. and lily mad 42$ you can divide 42 by 6 to get the answer of 7