题目的意思是：一个人骑车向南走了2公里,向东走了9公里；然后她意识到自己走错了,又向北走了14公里,向东走了4公里,求自行车走过的路程相对于原点的向量表示为多少
结果是（13,12）
根据选项,可知题目有误,最后应为14miles north and 4miles west
结果是（5,12）
选C
英文数学题.A person on a bike traveled 2miles south and then 9mil
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