Answer:
1/12
Step-by-step explanation:
You are close but 1/27 includes people who did not study but still passed. If you want a singular value you should look at the value for the for only the people who studied even if they passed. 
 
        
             
        
        
        
Answer:
1 out of every 5 throws were strikes.
Step-by-step explanation:
20% is one fifth of 100%.
 
        
                    
             
        
        
        
Answer: income
Step-by-step explanation:
 
        
             
        
        
        
Answer:
3/4
Step-by-step explanation:
1/4 + 2/4 = 3/4
5 + 10 = 15
 
        
                    
             
        
        
        
Answer:
If y varies directly as x^3 and y=36 when x=7, find y if x=4? (Round answer to the nearest hundredth) , find y if x=4 x = 4 . (Round off your answer to the nearest hundredth.)
Step-by-step explanation: