Answer:
Step-by-step explanation:
2*pi*r
here r=D/2=60/2=30
so
s=2*3.14*30=188.4
I can't help you with index notation, but i can give you the other part.
80 = 5 X 16 = 5 X
5 and 2 are prime numbers.
I picked five because 80 is not divisible by 3.
57 dollars is the total with the discount
Answer:
<h2>D) 28</h2>
Step-by-step explanation:
We know: the sum of the measures of triangle angles is 180°.
Therefore we have the equation:
Using the z-distribution, it is found that a sample size of 3,385 is required.
<h3>What is a confidence interval of proportions?</h3>
A confidence interval of proportions is given by:
The margin of error is:
In which:
- is the sample proportion.
In this problem, we have a 98% confidence level, hence, z is the value of Z that has a p-value of , so the critical value is z = 2.327.
We have no prior estimate, hence is used, which is when the largest sample size is needed. To find the sample size, we solve the margin of error expression for n when M = 0.02, hence:
n = 3,385.
A sample size of 3,385 is required.
More can be learned about the z-distribution at brainly.com/question/25890103
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