Add 9 to both sides to get the x-value alone
x-9=-5
x=4
9514 1404 393
Answer:
1/sec(x) · 1/tan(x)
Step-by-step explanation:
The breakup can be accomplished any of several ways.
Answer:
We need to contact 542 employees.
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:
98% confidence level
So , z is the value of Z that has a pvalue of , so .
a) How many randomly selected employers must we contact in order to create an estimate in which we are 98% confident with a margin of error of 5%
We dont know the proportion, so we use , which is when we are going to need the largest sample size.
We have to find n when M = 0.05. So
Rounding up
We need to contact 542 employees.
<span>R = 11 - 2m
S = n + 5
T = -m - 3n + 8
R - S + T
(</span>11 - 2m) - (n + 5) + (-m - 3n + 8)
6 - 2m - n - m - 3n + 8
14 - 3m - 4n
-3m - 4n + 14