Joint variation means that w=kxy where k is constant.
Finding k:
12=k*2*18
12=36k
k=1/3
Now plug in second set of values
16= 1/3*6*y
16=2*y
y=8
Final answer: 8
        
                    
             
        
        
        
Answer:
t^6
Step-by-step explanation:
when dividing exponents, you subtract (refer to exponent rule) 
t^12 - t^6 = t^6
 
        
                    
             
        
        
        
Answer:
5 Kg of apples
Step-by-step explanation:
cost of apples per kg = 24000.00/3
=8000.00
amount of apples bought = 40000.00/8000.00
=5 Kg
He got 5kg of apples with Rp.40,000.00
 
        
             
        
        
        
Answer:
Y = 50x
Since every minute he jumps 50 times, we multiply 50 by the amount of minutes (x)