Answer:
a
Step-by-step explanation:
 
        
             
        
        
        
Answer:
5
Step-by-step explanation:
first multiply 3 by 7 as 3x7=21
again find the square of 4 as 4^2=16
finally, subtract 16 from 21 as 21-16= 5
 
        
                    
             
        
        
        
Answer:
36 degrees
Step-by-step explanation:
I’m pretty sure that’s it