Answer:
 
 
Step-by-step explanation:
In order to find the value of y, first we need to find the length of the perpendicular dropped from one of the vertices of the triangle to its opposite side. 
By geometric mean theorem:
Length of the perpendicular 
 
 
 
 
Next, by Pythagoras theorem:

 
        
             
        
        
        
Answer:
question 1: answer is 4
question 2: answer is 1
Step-by-step explanation:
 
        
             
        
        
        
Answer:
what functions?
Step-by-step explanation:
 
        
             
        
        
        
Answer:
w=20
Step-by-step explanation:
Solve for  w  by cross multiplying.
 
        
                    
             
        
        
        
The best answer would be D) 67 because the other numbers are not prime.