Answer:
50 students
Step-by-step explanation:
20 + 30 = 50
Explanation:
The expression f(0) represents the value of the function at x=0 which means the y-intercept of the function.
the y-intercept of the graph is the point that crosses the y-axis.
From the given graph,
The y-intercept of the graph does not define.
Answer: f(0) = not defined
Answer:

And replacing we got:


Step-by-step explanation:
For this case we have the following info given:
represent the mean
represent the deviation
We select a sample size of n=100. This sample is >30 so then we can use the central limit theorem. And we want to find the distribution for the sample mean and we know that the distribution is given by:

And replacing we got:


Answer:
c y=2x-85 I think so please check if I'm wrong
I think c
Answer:
no, 3/15 reduces to 1/3 and 1:3 isn't equal to 1:5