Answer:
840
Step-by-step explanation:
Given


Required
Determine the number of rankings
The term "ranking" as used in this question implies permutation and the required is calculated using:

Where


So:






<em>Hence, number of ranking is 840</em>
 
        
             
        
        
        
The circumference = π x the diameter of the circle (Pi multiplied by the diameter of the circle). Simply divide the circumference by π and you will have the length of the diameter. The diameter is just the radius times two, so divide the diameter by two and you will have the radius of the circle
        
                    
             
        
        
        
Answer:
alr so basically what you want to do is multiply the numbers to get the answer
Step-by-step explanation:
 
        
             
        
        
        
Answer:
solution set are 


Step-by-step explanation:
we are given system of equation as


For finding solution set , we can draw graph of both equations 
and then we can find intersection point 
the intersection point will be our solution set
we get graph  as
So, solution set are 

