Answer: 
 Write the expression as:" 
70  +                          2
 +                          2 * 2
 * 2 − 18a
 − 18a " ; 
______________________________________________________or;  write as:
______________________________________________________           " 
70.32  + (2.1) * (2.7)  − 18a " ; 
______________________________________________________To simplify:
______________________________________________________  Using "PEDMAS" (the "order of operations") ; 
the "multiplication" comes first; 
So:  →  "(2.1) * (2.7) =  5.67 " .
And rewrite:
______________________________________________________ " 70.32  + 5.67 − 18a " .
Now:  " 70.32 + 5.67 = 75.99 " ; 
So, we can the final simplified expression as:
______________________________________________________   " 
75.99  −  18a " ;  
or; write as:  " 
75 −  18a
  −  18a " .
______________________________________________________
 
        
        
        
Answer:
   x = 10
Step-by-step explanation:
Use the Pythagorean theorem. The sum of the square of the sides is the square of the hypotenuse.
   x² +(√200)² = (√300)²
   x² = 300 -200
   x = √100 = 10
The length of the unknown side is 10 units.
 
        
             
        
        
        
Your inequality looks like this:

To get rid of the /6, you need to multiply by 6 as the opposite operation cancels it out. So, all you need to do is multiply both sides by 6 to isolate x. 
Therefore:
 
 
        
        
        
Answer:

Step-by-step explanation:
To solve this question, we will first expand the expression using the distributive rule: 
Therefore:

Simplify:

Add up like terms:

 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
n ≥ -2 + 9 
n ≥ 7