Answer:
X = 45
Step-by-step explanation:
Hope it will be helpful for you. 
 
        
             
        
        
        
The answer is 6*square rooted*2
        
             
        
        
        
Answer:
15
Step-by-step explanation:
if 3x3 is 9 and 4x3 is 12 then 5x3 is 15
 
        
             
        
        
        
                3            
                1
                390
              x  42
               -------
                1282
              1564
          ----------------
                       
the answer would be 16380
Hope this helped :)
        
             
        
        
        
Theres a saying: Dividing fractions dont ask why, just flip the second and multiply. 
so a/b / c/d = a/b * d/c 
-8/2 * -3/6
1. cross - cancel common factor 2
4/2 * -3/3
2. Multiply
-4(-3)/ 2*3
3. multiply numbers 
--12/2*3
- -12/6
4. Apply fraction rule -a/b=- a/b
=-(-12/6)
5. divide 
= -(-2)
6. Apply rule -(-a)=a
=2
 Your answer would be 2