Answer:
one third of the volume 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Yes it is showing a function
Step-by-step explanation:
 
        
             
        
        
        
Answer:
I think it is (x^2+9) x (x-1) x (x+1)
Step-by-step explanation:
(not sure if right but had a go)
 
        
             
        
        
        
Answer:
20%
Step-by-step explanation:
 
        
             
        
        
        
Answer:
45°
Step-by-step explanation:
Complementary angles sum to 90°, thus
90° - 45° = 45° ← is the complement of 45°