7 rollercoasters because 4 shows plus 3 more rolercoasters equal 7 and 4 shows .It takes 5 minutes to ride on the rollercoaster plus the estimated 30 minute wait equals 35 and 35*7=245 and it takes 25 minutes to watch show and 25*4=100 and 245+100=345 so he can ride 7 rollerecoasters and 4 shows in 345 minutes.
        
                    
             
        
        
        
Answer:
I think you need to multiply 12 and 7 and then cut that in half
 
        
             
        
        
        
2/4-6 ÷ 1/3 + 2
|
v
2/4 - 2 + 2
|
v 
2/4 -0
=2/4 -> 1/2 
you get it by using PEMDAS
        
                    
             
        
        
        
Answer:
20
Step-by-step explanation:
20 - 9 = 11 
I hope this helps
 
        
                    
             
        
        
        
195xy is ur lowest common denominator