The answer is 0
(According to the radical stuffs)
        
             
        
        
        
Answer:
Literally take your f(x) and - your g(x)
(x^2+9x+18) - (x + 6)
Remember to distribute the negative sign.
 
        
             
        
        
        
Answer:
Step-by-step explanation:
In the given triangle 
With reference angle A 
perpendicular (P) = 3
hypotenuse (h) = 5
So  sin A = p/h = 3/5
and
With reference angle C
perpendicular (p)=  4
hypotenuse (h) = 5
Sin C = p/h = 4/5
hope it helps :)
 
        
             
        
        
        
Answer:
Reflexive 
Step-by-step explanation:
Because C and D are right angles. That’s def of perpendicular. I’m not sure about the vertical angles but it’s shown in the proof