Answer:
9
Step-by-step explanation:
36/4 = 9
 
        
             
        
        
        
The answer for this would be 
C = 5000 + 200t
        
             
        
        
        
Answer:
4, 2
Step-by-step explanation:
The formulas for 180 clockwise and counterclockwise wise is -x,-y since both of them are negative they would become positive because -x * -x = + same with y. 
 
        
                    
             
        
        
        
Answer:
4.27%
Step-by-step explanation:
We have been given that college students average 8.6 hours of sleep per night with a standard deviation of 35 minutes. We are asked to find the probability of college students that sleep for more than 9.6 hours.
We will use z-score formula to solve our given problem.

z = z-score,
x = Random sample score,
 = Mean,
 = Mean,
 = Standard deviation.
 = Standard deviation.
Before substituting our given values in z-score formula, we need to convert 35 minutes to hours.




Now, we need to find  .
.
Using formula  , we will get:
, we will get:

Using normal distribution table, we will get:



Therefore, 4.27% of college students sleep for more than 9.6 hours.