Answer: none
Step-by-step explanation: there are no WHOLE numbers between 39
 
        
                    
             
        
        
        
1: multiple both sides by 2
Ex:-7n+10=-32
2: subtract 10 from both sides
Ex: -7n=-42
3:divide both sides by -7 to get n alone
Ex: n=6
Answer is 6 and the process is elimination!
        
             
        
        
        
6.6. 2.2*3= 6.6 
i hope this makes since
        
                    
             
        
        
        
Answer:
x=4.8
This here you use Pythagorean Theorem. 
Step-by-step explanation:
a^2+b^2=c^2
The longest side is c. And the two legs are a and b. 
So it'd be 11^2+x^2=12^2
121+x^2=144
Subtract 121 from both sides.
x^2=23
Then take the √ of x^2 and 23
So √x^2=√23
x=4.8
Hope this helps
 
        
             
        
        
        
Y-x =17
y = -x + 17 
substitute this into the second equation 
y = 4x + 2 
-x + 17 = 4x + 2 
0= 5x -15 
15/5 = 5x/5
3 = x