用英文描述三道数学题,每道不少于四句话

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查看11 | 回复2 | 2012-7-13 16:42:00 | 显示全部楼层 |阅读模式
1.A tank with full water has a inverted circular cone with base of radius 5 m and H of 10 m . If the tank has a hole and is leaking and the water level is decreasing at the rate of 3 m/min –estimate the rate at which the tank is losing water when the water lev...
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千问 | 2012-7-13 16:42:00 | 显示全部楼层
1、In a group of 80 students,24 are enrolled in geometry , 40 in biology, and 20 in both. If a student were randomly selected from the 80 students, What is the probability that the ...
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