Answer:
x = 3
Step-by-step explanation:
The 2nd polygon is 1.5 times larger.
12 x 1.5 = 18
18-6 = 12
12/4 = 3
x = 3
5x8=40 or 40x1=40 this will works
Answer:
The minimum sample size is needed to be 95% confident that the sample mean is within 5 minutes of the true population mean is 40.
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
So it is z with a pvalue of , so
Now, find the margin of error M as such
In which is the standard deviation of the population and n is the size of the sample.
If the population standard deviation is 16 minutes, what minimum sample size is needed to be 95% confident that the sample mean is within 5 minutes of the true population mean
This is n when . So
The minimum sample size is needed to be 95% confident that the sample mean is within 5 minutes of the true population mean is 40.
If she worked 37 weeks for 6 dollars each week, she earned 222 dollars. Add that with her tips, 43, and you get $265. Hope this helps.
Answer:
-4320t^2
Step-by-step explanation:
Use Pascal's triangle to figure out the variables.
In the 5th expansion, we see that the 4th term is:
10x^2 y^3
Plug in the values,
10*(4)^2 * (-3)^3 = -4230.
However, since the -3 in the original expression does not have a variable next to it, we do not include it in our answer.
Therefore, the 4th term is -4230t^2