Answer:
20 meters
Step-by-step explanation:
use the Pythagorean theorem:

 
        
             
        
        
        
Answer:
the cost of each book = $24
Step-by-step explanation:
(if all the books have the same price)
Let x be the price of one book
“She had $157 and After buying 6 books ,she was left with 13$“ means 
“157 = 6x + 13”
now we have an equation to solve :
157 = 6x + 13
⇔ 157 - 13 = 6x
⇔ 144 = 6x
⇔ 24 = x
 
        
             
        
        
        

First, add all the numbers together. 
Divide by the amount of numbers. 
 is the closest, so that is the answer.
 is the closest, so that is the answer.
 
        
                    
             
        
        
        
Answer:
The answer is 65%
Step-by-step explanation: Divide 60 by 39 and multiply by 100. So it will look like 39/60=0.65*100=65%. I hope this helps. :)