已知
是
所在平面内一点,
,现将一粒红豆随机撒在
内,记红豆落在
内的概率为
,落在
内的概率为
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25b3ee797f776dda55695109673647e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a31e28dd5cc991f4e541211c2c841100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8c7c8c8702adfbd6bcacc94a6bc661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b5940d1dfc53c91e58672bc76a7ed80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63ab13ef156d034b710d811e09b0be34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8552e74216c6d86fee1f74d47c23af2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25b3ee797f776dda55695109673647e0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
19-20高三上·河北保定·期末 查看更多[3]
更新时间:2019-01-15 14:47:04
|
相似题推荐
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【推荐1】在
中,点
为
的中点,
,
与
交于点
,且满足
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8eeca31b6ec56f02c3ca7969e098aa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bea3ed0cfe4b0bb079c98d1dd26dad6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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【推荐2】在
中,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1f80c193bf76030524b4ed7a00d2272.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9769839f35c2b7002b9f5e62f40b34de.png)
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C.![]() | D.![]() |
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【推荐1】高三排球联赛是南开传统体育赛事,在紧张备考时刻仍然组织同学们参与为期一周的排球赛,旨在增强高三学子体质,为学习生活注入新的动力.排球场地是长18米、宽9米的长方形场地,均分为两个半场,每半场距离“中线”有一条“3米线”,将半场分成前区(排)与后区(排).现将每个半场的底线两角处分割出两个半径均是3米的四分之一圆的扇形区域(如图),球员发球后球落在扇形区域称为“优质球”.已知高三小李同学每次发球均等可能的落在对方半场内,则小李在某次发球时能发出“优质球”的概率为( )
![](https://img.xkw.com/dksih/QBM/2021/5/15/2721678119370752/2763256464277504/STEM/9f5bfa50-e048-49c6-841c-0a9b0c81f682.png?resizew=181)
![](https://img.xkw.com/dksih/QBM/2021/5/15/2721678119370752/2763256464277504/STEM/9f5bfa50-e048-49c6-841c-0a9b0c81f682.png?resizew=181)
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【推荐2】给出下列两个命题:命题
:若在边长为1的正方形ABCD内任取一点M,则
的概率为
.
命题
:若函数
,则
的最小值为4.则下列命题为真命题的是:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11a29a6077d2efb9a973d549c8f8f45a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adddbc49f871b5cb5403aa7e4bd83312.png)
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