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How can i determine crop coefficient of constructed wetland macrophytes? I need news on the tremors/aftershocks/earthquake I am feeling in Maricopa county Arizona.? Let X1 & X2 have joint pmf p(x1, x2)=(x1x2)/36. 0 otherwise Find joint pmf of Y1=X1X2 and Y2=X2? How do i find price elacity for a quasilinear function? Step by step? Naphthalene sublimation rate=3*10^-5/min. Volume of room=60m^3. How would I calculate the naphthalene concentration in the air of the room?