The greatest common factor is 12w
        
             
        
        
        
False: You can't use the commutative property on subraction.
        
             
        
        
        
Answer:
Step-by-step explanation:
Let the speed of the roller coaster at the bottom is v. 
radius, r = 47 m 
Let the mass is m and the force at the bottom is 2.5 times the weight. 
F = 2.5 mg 
So, the force is 



v² = 1.5 gr 
v² = 1.5 x 9.8 x 47 
v = 26.3 m/s
 
        
             
        
        
        
2430
2*9 = 19
18*3 = 54
54*45 = 2430
        
                    
             
        
        
        
Answer:
10
Step-by-step explanation:
Angles 8x - 12 and 6x + 8 are adjacent angles.
Adjacent angles are equal.
8x - 12 = 6x + 8
8x - 6x = 8 + 12
2x = 20
x = 20 / 2
x = 10