Answer:
6
Step-by-step explanation:
because every 7 books Miss. Nelson gets 2 free books so when Miss. Nelson bought the 7 books she got the 6 and also took 21 divided by 7 and you get 3 then you times that with the 2 and that is how you get 6 books for free
 
        
                    
             
        
        
        
Plug in 3 for x. 5(3) (-2(3) x 2) = 15(-6 x 2) = 15(-12) = -180.
        
             
        
        
        
-9 is a rattional number because it is an integer and it can be squared.
        
             
        
        
        
Answer:
 Some of the possible factorizations of the monomial given are:
 
 
Step-by-step explanation:
  To factorize the monomia you need to express it as a product of two or more monomials.  Therefore, you must apply the proccedure shown below:
 - Descompose into prime numbers:
 
 - Then, keeping on mind that, according to the Product of powers property, when you have two powers with equal base you must add the exponents, you can make several factorizations.  Below are shown some of the possible factorizations of the monomial given:
 
 
 
        
                    
             
        
        
        
Answer:
8 small tables
Step-by-step explanation:
they told you they have 5 large tables that seat 10 guests and 98 guests are coming. You need to subtract 50 from 98 because after you multiple how many guests can sit at each large table by how many large tables they have it equals 50 so 98-50=48 then you need to divide 48 by six because each small table sits six people so 48/6=8 so you need 8 small tables.