Answer:
its the 4th one
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
z=1.5
Step-by-step explanation:
Simplifying
6z + 3 + -4z = 9
Reorder the terms:
3 + 6z + -4z = 9
Combine like terms: 6z + -4z = 2z
3 + 2z = 9
Solving
3 + 2z = 9
Solving for variable 'z'.
Move all terms containing z to the left, all other terms to the right.
Add '-3' to each side of the equation.
3 + -3 + 2z = 9 + -3
Combine like terms: 3 + -3 = 0
0 + 2z = 9 + -3
2z = 9 + -3
Combine like terms: 9 + -3 = 6
2z = 6
Divide each side by '2'.
z = 3
Simplifying
z = 3
 
        
                    
             
        
        
        
Answer: x= 21.6 
Step-by-step explanation:
 12^2  + 18^2  =x^2 
144 + 324 =x^2 
468  = x^2 
c=  21.633  
To the nearest tenth place  is c= 21.6 
 
        
                    
             
        
        
        
Answer:
1 9/11
Step-by-step explanation:
1.81 repeating is the equivalent to 1 9/11