名校
1 . 某中学对该校九年级45名女学生进行了一次立定跳远测试,成绩如表:
这些立定跳远成绩的中位数和众数分别是( )
跳远成绩 | 160 | 170 | 180 | 190 | 200 | 210 |
人数 | 3 | 9 | 6 | 9 | 15 | 3 |
A.9,9 | B.15,9 | C.190,200 | D.185,200 |
您最近一年使用:0次
名校
2 . 如图,
为
内一点,
交
于
,
切
于
,若
,
,则
的半径为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/7a835518-80aa-4774-ae92-2505db65d061.png?resizew=174)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c8a901e90c7e81450e0c00854011abd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/7a835518-80aa-4774-ae92-2505db65d061.png?resizew=174)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次