Arranging of books is an illustration of permutation and combination
There are 24 different possible arrangements she can make
<h3>How to calculate the number of arrangement</h3>
The number of books is given as:
n = 4
Take the factorial of both sides
n! = 4!
Evaluate
n! = 4 * 3 * 2 * 1
n! = 24
Hence, there are 24 different possible arrangements she can make
Read more about permutation and combination at:
brainly.com/question/1216161
 
        
             
        
        
        
Answer:
10 feet
Step-by-step explanation:
You use the pythagorean theorem to find the missing side of a right triangle. 
side^2 + side^2 = hypotenuse ^2 
6^2 + 8^2 = X^2
36 + 64 = 100
square root of 100 = 10 
 
        
             
        
        
        
Answer:
A
Step-by-step explanation:
 
        
             
        
        
        
The answer is 2 ( choose 2 ) 
and how we find this answer? the picture is clearly for that. 
 
        
             
        
        
        
Answer:
4- -1=3 
Step-by-step explanation:
7. m=3 (4,-1) 
do the () inside first so 
4- -1 = 3 
hope this helps for number 7