I'm afraid it's not 11 (unless you can round the result up, but there is no mention about it).
8 + 13 + 11 + 9 + 13 = 54
54 / 5 = 10,8
Firstly you sum all the numbers and then you divide the result by the amount of the summed up numbers.
        
             
        
        
        
15 days
Hope this helps 
Mark brainliest please
        
             
        
        
        
Answer:
13
Step-by-step explanation:
x+5=3x+2
5=2x+2
3=2x
x=1.5
1.5+5=6.5
6.5 is half of DF, DF=13
 
        
                    
             
        
        
        
Answer: The area of Rhode Island is about 1,212 square miles
 
        
             
        
        
        
Answer: C. 14 
3 people weigh between 150-159
4 people wiegh between 160-169
7 people wiegh between 170-179