Answer:
35 sq units
Step-by-step explanation:
Your factored answer will be
(3x-4y) (x-5y)
hope this helps
Answer:
Step-by-step explanation:
number 2
Answer:
The minimum number of cities we need to contact is 96.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of
, and a confidence interval
, 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 interval
So
, z is the value of Z that has a pvalue of
, so
.
In this problem, we have that:







The minimum number of cities we need to contact is 96.
(2n-1) /(n+9)
hope it can help u