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A 2.012 g sample of a compound of nitrogen and oxygen has 0.522g of nitrogen. Calculate its empirical formula.? I made a typo earlier, excuse me. I still don’t understand how to do this. Find b such that f(x)=-4(x^2)+bx+3 has a maximum value of 50? I want to login again? √17x+2 +√x+7 = 9 .....is there anyway to know how much solution will this equation have without solving it .options : -1/0/2/none sollution? I am a caregiver and I want to know what I can give to my pacient that take Coumadin.?