Answer:
The question mark is just there in place of a number it is telling you that it does not have a number there and you have to solve for it. I hope this helps if not i can explain it more
Step-by-step explanation:
Answer:
this is school work
Step-by-step explanation: sorry but you gotta figure this out yourself.
but, the thing is that you should figure out the stuff inside the (these -->) then figure out the rest step by step like this, x= what then try to understand y= what, then use them to answer the problem.
and if its like this 1(4x + 5y) that mean that 9xy times 1 is your answer, this is an example.
Answer:
The p value for this case is given by:
For this case the p value is higher than the significance level given so we have enough evidence to FAIL to reject the null hypothesis and we can't conclude that the true mean is significantly less than 409
Step-by-step explanation:
Information given
represent the sample mean
represent the population standard deviation
sample size
represent the value to verify
represent the significance level for the hypothesis test.
z would represent the statistic (variable of interest)
represent the p value
Hypothesis to test
We want to verify if the true mean is less than 409, the system of hypothesis would be:
Null hypothesis:
Alternative hypothesis:
The statistic for this case is given by:
(1)
Replacing the info we got:
The p value for this case is given by:
For this case the p value is higher than the significance level given so we have enough evidence to FAIL to reject the null hypothesis and we can't conclude that the true mean is significantly less than 409
Answer:
Factor the following:
3 x^5 - 7 x^4
Factor x^4 out of 3 x^5 - 7 x^4:
Answer: x^4 (3 x - 7)
Step-by-step explanation:
Because b - a could be, for example, b = 5 and a = 7. So if the question were to be 5 - 7 = -2, that would be b - a. If you swap it around, then the question would be 7 - 5 = 2, and that would be a - b. I hope this helps.