Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.square root of the ratio of the time units, or √3. Taking all this into consideration, the safety stock equation becomes:, where: Z = Z-score PC = performance cycle, another term for total lead time T 1 = time increment used for calculating standard deviation of demand σ D = standard deviation of demand.
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Mar 03, 2009 · CNET reports that today is Square Root Day since the month and day (number 3) are both the square root of the year (09). The holiday is credited to a Redwood City teacher named Ron Gordon, and, according to the story, "celebrants are expected to mark the occasion by cutting root vegetables into squares or preparing other foods in the shape of the square root symbol."