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masterofcheese04
2 x 3 = 6 x 10 = 60
Assuming that you are using the same rule:
4 x 9 x 10 = 360
The value of z when x = 4 and y = 9 is 360. Hope this helped!
kphung76127
When it says z varies jointly, it means z=kxy where k is constant.
x*y=6
60=k*6
k=10

Now plug in the new given values for x and y
z=10*4*9
z=40*9
z=360

Final answer: 360

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