Answer:
you want to isolat U on one side, so subtract 9/-4 from both sides to end up with (9/-4) - 9 = u, then solve. (9/-4)-9 = -11.25, so -11.25 = u
Answer: Point W
Its the Only interior point.
Answer:
A
Step-by-step explanation:
7/8-1/4=5/8
pls mark me brainliest
Surface area I think is the circle. So the formula to find the area of the circle is to do Pi times radius squared. Pi= 3.14 Radius in this case will be 2.2. (Radius is how much it measures out from the middle.) then you want to do 2.2 x 2.2 (since it's square) So the answer would be equal to (I think) 15.1976
Answer:
Step-by-step explanation:
information given
represent the sample mean
represent the population standard deviation
sample size
represent the value that we want to test
represent the significance level for the hypothesis test.
z would represent the statistic
represent the p value for the test
Hypothesis to test
We want to test if the true mean is less than 12, the system of hypothesis would be:
Null hypothesis:
Alternative hypothesis:
The statistic is given by:
(1)
Replacing the info given we got:
We can replace in formula (1) the info given like this:
