Answer: 100
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer: 20.2
Add all the angles and set it equal to 180
Combine like terms 
20x-2=180
X= 9.1
The equation for v is 2x+2 
Replace x with 9.1 and then solve
        
             
        
        
        
Answer:
x = 21.013155617496
Step-by-step explanation:
we have a right triangle then ,

Then

Then
x ≈ 21
 
        
                    
             
        
        
        
Concentric as they have same center