Answer:
2.4x+2.9
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
A and D
Step-by-step explanation:
A.
2(10)=20
2(24)=48
20+48
D.
4(5)=20
4(12)=48
20+48
i hope this helps! 
 
        
             
        
        
        
I'm pretty sure it depends what kind of triangle it is
        
                    
             
        
        
        
Answer:
x = -1
Step-by-step explanation:
to find axis of symmetry, use the following equation:
x = -b/2a
in this problem, a = 3, b = 6, c = -12
x = -6/2(3)
x = -6/6
x = -1