Answer:
x=-24 is the correct answer
Answer:
The 98% confidence interval estimate of the proportion of adults who use social media is (0.56, 0.6034).
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
.
Of the 2809 people who responded to survey, 1634 stated that they currently use social media.
This means that 
98% confidence level
So
, z is the value of Z that has a pvalue of
, so
.
The lower limit of this interval is:

The upper limit of this interval is:

The 98% confidence interval estimate of the proportion of adults who use social media is (0.56, 0.6034).
Answer:
2.749
Step-by-step explanation:
Use the polar distance formula:


2.749
Answer: 4/9
Step-by-step explanation:
apply product rule to 2/3 2^2 / 3^2
Answer:
2x > 10+4
x > 14/2
x > 7
Step-by-step explanation: