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题目内容双击单词支持查询和收藏哦～
Points R, S, and T lie on a number line, where S is between R and T. The distance between R and S is 6, and the distance between R and T is 15.
Quantity A
the distance between the midpoints of lines segments RS and ST
Quantity B
the distance between S and T
B显示答案
以上解析由 考满分老师提供。
