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How much energy does it take to launch a 300 kg instrument package on a vertical trajectory that peaks at an altitude of 1800 km ? Compare the environmental consequences related to obtaining the three major types of fossil fuels? F(x, y) = (1 + 5xy)^(3/2) then nabla(f( x, y) is? Need help with an Algebra problem! How do you solve 12x^2 -5x=2 by using the quadratic formula? A set of values has a mean of 250 and a standard deviation of 50. What value has a z-score of -2.4?