Answer: standard deviation
Step-by-step explanation:
 
        
             
        
        
        
You multiply Q and a to get 240, because 15 x 16 = 240.
 
        
             
        
        
        
Answer:
5:17
Step-by-step explanation:
there are 17 total marbles and 5 that are green. The part is 5 and the whole is 17. 
 
        
                    
             
        
        
        
Answer:
One has 4 sides and one has 3 sides 
Step-by-step explanation:
a square has 4 sides and an equilateral triangle has 3 sides
 
        
                    
             
        
        
        
Step-by-step explanation:
the price of a piece of cloth and the length of the cloth