unit rate would be miles per hour
 so divide 210/3 = 70
 
 
        
                    
             
        
        
        
102 thts the anwser ur welcome
        
             
        
        
        
Answer:
Step-by-step explanation:
Pentagon
So, Pentagon has 72 degree rotational symmetry.
 
        
                    
             
        
        
        
D. S, the number of students at the school
        
             
        
        
        
Answer:
Following are the solution to this question:
Step-by-step explanation:
They provide various boxes or various objects.  It also wants objects to be distributed into containers, so no container is empty.  All we select k objects of r to keep no boxes empty, which (r C k) could be done.  All such k artifacts can be placed in k containers, each of them in k! Forms. There will be remaining 
 objects. All can be put in any of k boxes.  Therefore, these 
 objects could in the 
 manner are organized.  Consequently, both possible ways to do this are

Consequently, the number of ways that r objects in k different boxes can be arranged to make no book empty is every possible one
