- 3x+2y=x-6=0?

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... 2且与平面x-2y+x-6=0垂直的平面方程式直线的方向向量为 v1 ... 2013-03-16 过直线x-2y-z+6=0，3x-2y+2=0且与点（1 ...

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What is the notion of power? What is the probability of rolling both a 1 then a 6 on two consecutive rolls of a single die? How many feet high would one million dollars reach? (..in one hundred dollar bills)? How many atoms are there in 25.6g of Fe and Au . Surely not 25.6/1divided by molar mass x 6.022 x 10^23 as it would be number of molecules? Is the human brain a muscle or a organ?

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