Answer:
b
Step-by-step explanation:
 
        
             
        
        
        
I think it might be experimental probability:)
        
             
        
        
        
Change the 12 and 1/2 cm to mm which is 125mm + 25mm = 150mm
        
             
        
        
        
Answer:
The discriminant is 40
Step-by-step explanation:
First, rewrite the equation as  so that the equation is in the form of
 so that the equation is in the form of  . Thus, the discriminant is
. Thus, the discriminant is  . This tells us that since the discriminant is greater than 0, then there are 2 real solutions.
. This tells us that since the discriminant is greater than 0, then there are 2 real solutions.
 
        
                    
             
        
        
        
Answer:
i don´t understand 
Step-by-step explanation:
i don´t understand