- Prove the am>gm>hm?

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What is the mass of carbon in a 5-carat diamond that contains 5.00 x 10^22 atoms of carbon? What are the values for which f(x) is less than or equal to 0 & the number at which f has a relative maximum & the relative maxima of f.? Phosphoric acid, is a triprotic acid, for which Ka1= 7.2×10^-3, Ka2 = 6.3×10^-8 and Ka3 = 4.2×10^-13. What is the value of Kb for PO43-? How do I find the value of cos B from: tan B/2, given tan B = -sqrt(11)/5, with pi/2 < B < pi The answer is -5/6, but how do they get it? Fsolve not working on x+y=2 and 2x-y=3 it says invalid arguments?