Answer:
the unknown numer is n=45
 
        
                    
             
        
        
        
I attached a pic with my work on it. Hope this helps!
 
        
        
        
Answer:
5w+6
Step-by-step explanation:
3w+2(w-2)+10       distribute the 2
<u>3w</u>+<u>2w</u>-4+10         combine like terms the w's and 
                                                the numbers without the variables
5w+6
 
        
             
        
        
        
Answer:
X= 70 degrees
Step-by-step explanation:
 
        
             
        
        
        
Answer:
1 ballon will be leftover. 
Step-by-step explanation:
53 divided by 4 will be 13 and 13 times 4 is 52 sooo 53 minus 52 is 1 balloon left over. the sad lonely balloon...