Answer:
3x-x+2=4
Step-by-step explanation:
Answer:
The margin of error is of 0.038 = 3.8%.
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 
.
For this problem, we have that:
90% confidence level
So 
, z is the value of Z that has a pvalue of 
, so 
.
The margin of error is:
The margin of error is of 0.038 = 3.8%.
For his total monthly bill to be under a twenty dollars he could make a 149 calls
20-5=15
15/.10=150
150-1=149
15-.10=14.9
14.9+5=19.9
So the maximum number of calls he can make is 149 a month
Answer:
4/5
Step-by-step explanation:
if 1/4 of x is 1/5 that means there is 4 sets of 1/5
so 4*1/5= 4/5
your answer is 4/5
Answer:.......
Step-by-step explanation:
