Answer:
????????????
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
The first, third and last sequences
 
        
             
        
        
        
B or 12 would be the correct choice!
Hope this helps and mark as brainliest please!
        
                    
             
        
        
        
A=x
B= 2x 
C=3x 
If you add them up =
 6x =180
÷6 both sides 
x=30
A=30
B=60
C=90
one angle is 90 degrees so the triangle is classified as a right triangle
        
                    
             
        
        
        
8/11 of what = 16
8/11x = 16
x = 16 * 11/8
x = 176/8
x = 22......so there are a total of 22 fish in the tank