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[Issue Essay]

试题详情

题目:

Analytical!

选项:

答案:

提问:

On his drive to work, Leo listens to one of three radio stations, A, B, or C. He first turns to A. If A is playing a song he likes, he listens to it; if not, he turns to B. If B is playing a song he likes, he listens to it; if not, he turns to C. If C is playing a song he likes, he listens to it; if not, he turns off the radio. For each station, the probability is 0.30 that at any given moment the station is playing a song Leo likes. On his drive to work, what is the probability that Leo will hear a song he likes? 这个题目的0.3为什末代指在A station 播放到了自己喜欢的?不太理解0.3到底指的是甚麽

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解答: 徐小梅

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阅读267079
解答: 徐小梅老师

提问:

求may老师解答

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解答: 徐小梅老师

提问:

求may老师解答

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解答: 徐小梅老师

提问:

老师你好,数学课本第29页例4题,我没看懂解答1和2中的组合问题。谢谢!

解答:

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解答: 徐小梅老师

提问:

这一题没看懂是怎么解M和N的,为什么等于84?不是改86吗?

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解答: 徐小梅老师

提问:

老师没听懂,哪里来的2呢

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解答: 徐小梅老师

提问:

2的三次方 5的三次方是什么呀?

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解答: 徐小梅老师

提问:

np 2*2是什么意思 不懂为什么选E

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解答: 徐小梅老师

提问:

老师你好 这道题的n怎么选数字来解它 那么多数字 为什么偏要选择0 1 2…?

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解答: 徐小梅老师

提问:

老师你好,左边这道题解法听明白了,但是3k加2乘以15k加3这个方程不会解,最近看好多题都是不知道怎么解方程,我全忘了。数学书我看了,有概念,但是没教怎么解方程的!请先告诉我这道题那个地方是怎么回事,再教我怎么做,谢谢!

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解答: 徐小梅老师

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