What is the ratio of the area of a right-angled triangle to an equilateral triangle with equal perimeter, if the base of the right-angled triangle is twice the side length of the equilateral triangle?
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Math Question: Find the derivative of f(x) = 5x^4 - 3x^3 + 2x^2 - 7x - 1.
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Question: "Given the data set {5, 8, 12, 16, 20}, calculate the standard deviation?"