The answers are MK and PY and AH.
        
             
        
        
        
Answer:
50% of what number is 11.72 = 23.44
Step-by-step explanation:
50% is half, so simply doube it.
 
        
             
        
        
        
Domain means which values the function can have which make it true or Possible to solve
So all you got to do is set the denominator = to 0 and solve for x
You will get x=7
4/(7-7) is not possible
So x cannot equal to 7 because you cant divide a number by 0!
        
             
        
        
        
Answer:
2y^2 +5y
Step-by-step explanation:
y^2 + 11y - 6y + y^2
Combine like terms
2y^2 +5y
 
        
                    
             
        
        
        
Answer:
A 21/4
Step-by-step explanation:
When forming a perfect square trinomial you need to "complete the square".
All of the steps to completing the square when solving an equation:
1.  The leading coefficient must be 1.  
2.  Divide b by 2.
3.  Square (b/2)
4.  Add (b/2)^2 to both sides to keep the polynomial balanced.
5.  You can now write the perfect square trinomial and solve.
x^2 - 3x  
-3/2
(-3/2)^2 = 9/4 = 2 1/4