Answer:
blue, orange, purple ,red ,blue 
 
        
                    
             
        
        
        
To find the mean, you add all the elements together, then divide by the number of elements. 
Like this:
(45+48+49+40+53)/5=47
in other words the correct answer is 47 inches. 
EDIT: Did the foolish mistake, of using the wrong numbers the first time. Fixed now and the answer is correct.
        
                    
             
        
        
        
Answer: x≤ 4
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
-420
Step-by-step explanation: