- A random variable x is normally distributed with μ = 100 and σ = 20. Find P(x <= 75)?

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An expanding universe must be flat,that is to say,euclidian geometry must be valid for large scales? Two edges of a isosceles triangle are: A(2,-2) and B(6,0). Its area is A=20 cm^2. Edge C=? What is a number 2 comb? CHEMISTRY: How do you change volume to number of moles (and vice versa), what formula do I use? What is the elements of H=[x/x is a counting number between 7 and 10]?