Please check my work for this one problem!
X=0.2 & Y=3 when Z=2, & Z varies jointly with X & Y.
z=kxy
2=k(0.2)(3)
2/0.6=k(0.6)/0.6
Z=3.3xy

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k=1/0.3,not 3.3.so z=xy/0.3

Can you explain how you got that a little please. :b

|dw:1371726212727:dw| alright?

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