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Why can`t we breath under water? Xy squared + 2x = 4 how to solve and no if its symmetry or no? Thank you!? Hi guys, In this compound (NH4)2Cr2O7 How can I determine the oxidation number for N and Cr? If H= +1 and O=-2? What is the equation of the normal line to the curve 9x^3 - y^3 = 1 at point (1,2).? 1. Consider the sets A = {−1,0,2,1} and B = {x : −1 < x < 3,x ∈ Z}. Are sets A and B
(a) equal?
(b) equivalent?