AMC 8 2005 Problem 7

AMC8 2005 年第 7 题

坐标几何★★☆☆☆

Bill walks

\tfrac12

mile south, then

\tfrac34

mile east, and finally

\tfrac12

mile south. How many miles is he, in a direct line, from his starting point?

Bill 先向南行走

\displaystyle \frac{1}{2}

英里，然后向东行走

\displaystyle \frac{3}{4}

英里，最后向南行走

\displaystyle \frac{1}{2}

英里。那么他现在距离起点的直线距离是多少英里？

A.1
B. $1\tfrac14$
C. $1\tfrac12$
D. $1\tfrac34$
E.2

正确答案 · Correct Answer

B

解析 · Solution

解析整理中

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