Answer:
50°
Step-by-step explanation:
I am assuming that the shape is a right triangle. 
All interior angles of a triangle add up to 180°.

The missing angle should be 50°.
Hope this helps.
 
        
                    
             
        
        
        
Answer:
o.o326
Step-by-step explanation:
when dealing with negative exponents you move the decimal to the left 
 
        
             
        
        
        
Answer:
Yes
Step-by-step explanation:
It is A
 
        
             
        
        
        
Answer:
3/4
Step-by-step explanation:
I'm actually not sure about this, probably don't put this in so you don't get it wrong.