Here's what I got for the first question.
Did you want answers for the second one? I couldn't read that part of the image very well, if you did.
Answer:
We need a sample size of least 119
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of 
, and a confidence level of 
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of 
.
The margin of error is:
95% confidence level
So 
, z is the value of Z that has a pvalue of 
, so 
.
Sample size needed
At least n, in which n is found when 
We don't know the proportion, so we use 
, which is when we would need the largest sample size.
Rounding up
We need a sample size of least 119
Answer:
x = 174080/y
y = 174080/x
Step-by-step explanation:
Okay, say you have 1/5 amount of pizza. And there is ten people who has to eat it. How much pizza will each person get? Let me know if u need the answer. Brainliest?
(3^2)3=27
27/3^x=3
3(3^x)=27
3^x=9
x=2
