i don't really get what the question  is could you write it again?
 
        
             
        
        
        
Answer: 6630
Step-by-step explanation:
Given , Number of documentaries = 17
Number of children's movies = 20
Total movies = 17+20=37
Number of combinations of r things taken out of things = 
Now, the number of different combinations of 3 movies can she rent if she wants at least one documentary 
= (1 documentary+2 children's movies  , 2 documentary+1 children's movies , 3 documentary+0 children's movies)


Hence, the  number of different combinations of 3 movies can she rent if she wants at least one documentary is 6630 .
 
        
             
        
        
        
Answer:
Flags are one of the simplest yet most powerful pieces of design ever conceived.
Step-by-step explanation:
They can make us swell with pride, burn with hatred — and even inspire people to die or kill in their name, says vexillologist Michael Green. Take a brief walk through history as Green explores the symbolic fervor behind flags that unify and divide, inviting us to imagine a future where we can come together under one collective identity: humanity.
 
        
             
        
        
        
The order of these numbers is 2, to 3, to 17. hope this helps :))
        
             
        
        
        
The absolute value is always positive:
For example, the absolute value of -5:  | - 5 | = 5 and also the absolute value of 5 : | 5 | = 5
P =  - 1 1/4
The absolute value of point P. 
| P | =   | - 1 1/4 |   =   1 1/4