Answer:
31.2
Step-by-step explanation:
i googled it
 
        
                    
             
        
        
        
I think it’s v=-20 i showed you my work if that helps :)
 
        
             
        
        
        
Answer:
the darkest shaded one.
Step-by-step explanation:
because the two areas for possible answers both intersect at that area, therefore, that is the answer.
 
        
                    
             
        
        
        
Answer:
9
Step-by-step explanation:
Replace a by 7
and 
b by 4
and 
c by 1/2
7+4(1/2)
7+2=9