Answer:
I think the value of X is 3.
Step-by-step explanation:
Because, it should be almost equal to the other side. Sorry if I'm not right.
 
        
             
        
        
        
Answer:

Step-by-step explanation:
we know that
An isosceles triangle has two equal sides and two equal angles
so
The perimeter of triangle is equal to

Eliminate parenthesis

Combine like terms

 
        
             
        
        
        
The answer is that it's a right triangle. One angle is 90°
 
        
             
        
        
        
Increase = Going up.
Therefore Graph D is increasing. simply logic