By knowing the volume of a triangle and that the triangle has all equal sides
        
                    
             
        
        
        
Answer:
y=2/3x-1 is 3/2
y=-2/3x-1 is x=3/2
y=-3/2x-1 is x= 2/3
Step-by-step explanation:
 
        
             
        
        
        
The correct answer is A.  All triangles' interior angles equal 180.
        
                    
             
        
        
        
Answer:
The number of coins to make 6440 mm diameter is 230
Step-by-step explanation:
The diameter of the coin is 28mm
Number of coins to have 6440 mm will be
6440/28
= 230