There are many possible answers.
10:12
15:18
20:24
25:30
30:36
        
                    
             
        
        
        
Answer:
true 
Step-by-step explanation:
a square will always be a rectangle but a rectangle will not always be a square.
 
        
                    
             
        
        
        
Answer:
divide the diameter by 2
Step-by-step explanation:
the equation for the area of a circle is Pi times the radius squared. the radius is half the diameter, so if you need to find the area of the circle, just divide the diameter by 2 and you will have the length of the radius. then, jut plug it in to the equation.
 
        
                    
             
        
        
        
m - 9 = 42
42 is our final answer so that should be by itself. 
If something is being decreased by 9, that means that we are taking away 9 from something so it should be m - 9.