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Find an equation in standard form for the hyperbola with vertices at (0, ±2) and foci at (0, ±7).? Where a some zoos in the U.S. that you can pet and hold Lion or cheetah cubs? What is the difference between nonfarm & off farm activities? Calc 3 optimization? If energy of a lead nuclei is 574TeV,prove that the single nucleon is 2,76TeV?