Question: What is the sum of the first 10 terms of an arithmetic sequence with a first term of 3 and a common difference of 4?
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Question: In triangle ABC, the angle bisector of angle B divides side AC into segments AD and DC. If AD = 6x - 8 and DC = 4x + 10, find the value of x.
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What is the unit vector that represents the direction of the vector (3,4)?