回复：33.81% ?

来源: ruby88 于 2009-03-15 13:02:43 [] [旧帖] [给我悄悄话] 阅读数 : (78 bytes)
回答: 请教高中数学题 由 ruby88 于 2009-03-15 10:25:32

The answer on the back of the book is 0.0425. But I don't know how to get it.

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