a*****g 发帖数: 1320 | 1 【 以下文字转载自 SanFrancisco 讨论区 】
发信人: ashuang (不要迷恋哥,哥只是个传说), 信区: SanFrancisco
标 题: 7年级数学再次求教
发信站: BBS 未名空间站 (Wed Sep 29 00:25:43 2010, 美东)
CITY POPULATION IN 1990, THE POPULATION OF THE PITTSBURGH, PENNSYLVANIA
AREA WAS 1679 THOUSAND PEOPLE.THE TABLE SHOWS THE AVERAGE RATE OF CHANGE IN
THE POPULATION FOR TWO PERIODS OF TIME.FIND THE TOTAL POPULATION IN 2000 AND
2002.
TIME PERIOD RATE OF CHANGE (THOUSAND PEOPLE/YR)
1990-2000 -3.7
2000-2002 -6.5 | l****x 发帖数: 1356 | |
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