Let / be the length of a diagonal of a rectangle whose sides have lengths x and y, and assume that x and y vary with time. 1 ft/s and y decreases at a constant rate of 8 1 ft/s, how fast is the size of the diagonal changing If x increases at a constant rate of when x = 5 ft and y = 5 ft? (Round your answer to four decimal places. Be sure to choose the correct units.) ---Select---

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