Answer:
You have to go on a cite called Math and Way buth without the and and no space between math and way
Step-by-step explanation:
7) 2-9= -7 because, if you have two cookies and promised nine friends cookies, you would still owe 7 friends cookies or -7
8) -3 - (-4)= 1 because you owe 3 friends cookies, then you get 4 cookies and have one left over
9) 11 - (-12)= 23 because a negative plus a negative is a positive
Answer: 16590
Step-by-step explanation:
The formula we use to find the sample size is given by :-
, where p = prior estimate of population proportion.
= Critical z-value (Two- tailed)
E= Margin of error .
Let p be the population proportion of cyanobacteria.
Given : E = 0.01
Critical value for 99% confidence interval : 
If Ian does not want to rely on previous knowledge , then we assume p=0.5 because the largest standard error is at p=0.5.
Now, the required sample size = 

Required sample size = 16590
Answer:
slope = 0
Step-by-step explanation:
The line shown is horizontal and parallel to the x- axis.
Since the x- axis has a slope of zero
Then the given line has a slope = 0
Answer:
7
Step-by-step explanation:
1 hour = 118 guests
826 / 118 = 7 hours