A plumber is supposed to arrive between 10 am and 1 pm to do some work at your house. Assume his arrival is equally likely at any time within this interval. What is the probability density function (if we measure time in hours)? f(x)

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Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps

The first few steps in solving the quadratic equation 9x2 + 49x = 22 ? 5x by completing the square are shown. 9x2 + 49x = 22 ? 5x 9x2 + 54x = 22 9(x2 + 6x) = 22 which is the best step to do next to solve the equation by completing the square? 9(x2 + 6x + 3) = 25 9(x2 + 6x + 3) = 49 9(x2 + 6x + 9) = 31 9(x2 + 6x + 9) = 103