A rational number can be represented in a ratio of a/b.  
Therefore, 5.3 would be a rational number in between 5.2 and 5.5, as it can be represented as 53/10. 
Hope that helps!
        
             
        
        
        
Answer:
68 degrees
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
9.  8 10
 8 10   
10. 6  
  9
 9
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Fraction: 5/6
Step-by-step explanation:
(1/2) / (3/5) = 1/2 X 5/3 = 0.83333333333