- What is the probability of Tails or a five?

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If an object with a mass of 35 grams has a volume of 70cm cubed and its length is 40cm, what is the density of the object? 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? What is [1/cos(x)-sin(x) times tan(x)]/cos²(x)? The empirical formula of hydrazine is NH2, and its molecular mass is 32.0 grams. What is its molecular formula? What is ∞^0? What is 0∞?