What is the resultant displacement when a vector of magnitude 10 units, 30° north of east, is added to a vector of magnitude 12 units, 45° west of north?
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What is the median of the set {7, 9, 11, 15, 22, 25}?
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What is the vertex form of a parabola function with characteristics (y = ax^2) and vertex (h, k)?