谢谢。不好意思……我是想问上面那题……
The figure represents a rectangular level plot of land, subdivided into identical rectangular gardens.
jinziqi 发表于 2009-10-17 11:23
http://sns.gter.net/attachment/200910/17/2403945_125575039161kY.jpg
问个问题。是后面的那个问county W 和county Z 的。
这个是怎么出 ...
mique 发表于 2009-10-17 11:38
我是这么理解的……由2和8共同相乘得到的数
所以,2*8,2*8*8
2^0*8,2^2*8,2^3*8,2^4*8,2^5*8,2^6*8
一共八个数,随便选一个,1/8
不知道理解的对不对……
jinziqi 发表于 2009-10-17 15:03
2. 36题 in what month was gas use in one of the years nearly double that for the samw month in the other year,为什么答案是july啊
3. 49题 if the average of x,y,z,5,and 7 is 8,which of the following ...
verazhangbeibei 发表于 2009-10-20 21:36
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