11+4+86+9=110
Adding the places James was able to name will give you the sum, as sum means addition
Using the z-distribution, it is found that she should take a sample of 46 students.
<h3>What is a z-distribution confidence interval?</h3>
The confidence interval is:

The margin of error is:

In which:
is the sample mean.
is the standard deviation for the population.
In this problem, we have a 95% confidence level, hence
, z is the value of Z that has a p-value of
, so the critical value is z = 1.96.
Scores on the math portion of the SAT are believed to be normally distributed and range from 200 to 800, hence, by the Empirical Rule the standard deviation is found as follows:



The sample size is n when M = 29, hence:





n = 45.67.
Rounding up, a sample of 46 students should be taken.
More can be learned about the z-distribution at brainly.com/question/25890103
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Lets calculate derivative of

That is:

Comparing that with offered answer we can see that results match.
Answer:
slope = 1/7
Step-by-step explanation:
7x+y=9 you should be in slope int form--> y=-7x+9
then the line is perpendicular so
the slope is 1/7
Answer:
27
Step-by-step explanation:
X/39=(X+18)/65
65X=39X+702
26X=702
X=27