Answer:
6 : 1 
Step-by-step explanation:
b - 3a / 9 = a /3
Cross multiply 
3(b - 3a) = 9a
Expand 
3b - 9a = 9a
Add 9a to both sides 
3b = 9a + 9a
3b = 18a
Divide both sides by 3 
b = 6a 
Ratio of a : b
6 : 1 
 
        
             
        
        
        
First row, the answer on the left , -5 3/4 - 4 2/3
        
             
        
        
        
Answer:
6%
Step-by-step explanation:
Step 1
The fist step is to define the probabilities.
The events are independent from each other. Each team wins with probability  and looses with probability
 and looses with probability  Let
  Let  be probability that Roses win and
 be probability that Roses win and  be the probability that Roses loose.
  be the probability that Roses loose. 
Step 2
The second step is to calculate the probabilities by multiplying the probabilities with the first 3 terms in the product being the probability of a win and the last term being the probability of a loss.
The calculation is shown below,

Step 3
The last step is to convert this probability into a percentage. Converting this probability to a percentage is  done as shown below,

Step 4
The next step is to round down the percentage . The value of 6.25% rounded down is 6%. The correct answer is 6%.
 
        
             
        
        
        
Answer:

Step-by-step explanation:





 
        
                    
             
        
        
        
Answer:
37
Step-by-step explanation:
59 percent times 63 in total marbles is 37