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Suppose y is jointly proportional to x and z. What is y when x=2 and z=3, if y=20 when z=4 and z=3?

 Nov 30, 2020
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y = k * x * z

 

20  =  (k) * (4)  * ( 3)

 

20 =  12k

 

k =  20/12 =  5/3

 

 

y =  (5/3)  (2) ( 3)

 

y =  10

 

 

cool cool cool

 Nov 30, 2020

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