What do you mean?????????????
        
             
        
        
        
Answer:
f(a+2)=3a+11/a+2
Step-by-step explanation:
 
        
             
        
        
        
I say symmetric. Both variables are the same, and the equation is showing their equality. This is my best guess.
Hope this helps!
 
        
             
        
        
        
Answer:
Circumference of a circle = pi * diameter



Radius = half of diameter



Area of circle =  , where r is the radius:
, where r is the radius:


If they ran around the track 3 times, they would cover the circumference three times.

Convert to centimetres:

 
        
             
        
        
        
The answer is D. Because all of the following choices can effect the temperature of the water.