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How to find covariance matrix when density function= 1/(2pi*sqrt3)exp(-(4x^2-2xy+y^2)/6)? Find an equation of the parabola that has a focus at (9,9) and a vertex at (9,6) y=?
and the directrix?
thanks!? A gas at 573 mmhg and 39.0 occupies a volume of 6.10L. What is its volume at STP? Net ionic equation for CuSO4 (aq) + Fe(s)? What is the mass of 1.75 x 10^24 molecules of NH3?