Answer:
0.4 to 1
Step-by-step explanation: 
2 1/2=2.5
you do 1 divided by 2.5 or 1/2.5 and you get 0.4 then add the unit rate of 1.
 
        
             
        
        
        
Answer:
c.
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
if you're looking for x its -13
 
        
                    
             
        
        
        
Answer:
C
Step-by-step explanation:
4(8-x)=8
32-4x=8
-4x=-24
x=6
 
        
                    
             
        
        
        
Total number of marble = 10
3green
2red
5 blue 
Probability that the first marble is red = 2/10
Probability that the second is blue = 5/9(a reduction in the total number of marbles, because after the first marble was picked it wasn't replaced) 
Probability of 1st and 2nd being red and blue respectively = 2/10 × 5/9
=1/9....
Hope this helped...?