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1 . 如图,E,F是正方形ABCD的边AD上两个动点,满足
,连接CF交BD于点G.连接BE交AG于点H.若正方形的边长为4,则线段DH长度的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff56ea00ca90825f3d95809de24f639.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/31/a34234b8-6c89-4dec-87ad-d2ab9bbba63b.png?resizew=132)
A.![]() | B.![]() | C.3 | D.3.5 |
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2 . 依次将正整数1,2,3,…的平方数排成一串:149162536496481100121144…,排在第1个位置的数字是1,排在第5个位置的数字是6,排在第10个位置的数字是4,排在第898个位置的数字是( )
A.1 | B.4 | C.5 | D.9 |
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3 . 如图①,点
从
的顶点
出发,沿
匀速运动到点
,图②是点
运动时,线段
的长度
随时间
变化的关系图象,其中
是曲线部分的最低点,则
的面积是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/3/7491ad95-2e71-4ece-8994-2a873e43c1d0.png?resizew=386)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7012d1ff11db5e150182e19646814cd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/3/7491ad95-2e71-4ece-8994-2a873e43c1d0.png?resizew=386)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 如图,将一直角三角形纸片的直角边
折叠,折痕为
与
上
重合,裁去
,已知
,在
上任取一点
,将
沿
翻折,得到
,与
重叠部分记为
.当
为直角三角形时,
长可以为多少?①
;②
;③
;④
.以上答案正确的有( )
![](https://img.xkw.com/dksih/QBM/2022/8/30/3055621145567232/3056956820553728/STEM/78db582e4b02415fbd89c11f2c116616.png?resizew=218)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c86f215963fd28e2c30dec3df0740235.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dcf17ba9ae27a457188f192cff5a2f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/441dec590b47adc3678a291a3ec89a4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dddd3f1d5e8f341f598d99ce04683fd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e64c953aaf341e772a5fe776fbc78a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fd09f591e95fd40e8ecfe6020f9f46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fd09f591e95fd40e8ecfe6020f9f46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619096595112f0340a43b756e114dd3d.png)
![](https://img.xkw.com/dksih/QBM/2022/8/30/3055621145567232/3056956820553728/STEM/78db582e4b02415fbd89c11f2c116616.png?resizew=218)
A.①③ | B.①② | C.①②④ | D.①②③ |
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5 . 如图,大矩形分割成五个小矩形,④号、⑤号均为正方形,其中⑤号正方形边长为1.若②号矩形的长与宽的差为2,则知道哪个小矩形的周长,就一定能算出这个大矩形的面积( )
![](https://img.xkw.com/dksih/QBM/2022/8/30/3055621145567232/3056956820250624/STEM/07d0cd4604eb4ee5abbd7cba2237c9d1.png?resizew=269)
![](https://img.xkw.com/dksih/QBM/2022/8/30/3055621145567232/3056956820250624/STEM/07d0cd4604eb4ee5abbd7cba2237c9d1.png?resizew=269)
A.①或③ | B.② | C.④ | D.以上选项都可以 |
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6 . 在对一组样本数据进行分析时,小凡列出了方差的计算公式:
,根据公式不能得到的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db3467513aca8c3c227bf23279176e68.png)
A.众数是6 | B.平均数是8 | C.方差是6 | D.中位数是8 |
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2022-09-01更新
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90次组卷
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3卷引用:安徽省六校教育研究会2022-2023学年高一上学期入学考试数学试题
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7 . 某药店在今年6月份购进了一批口罩,这批口罩包括一次性医用外科口罩和N95口罩,且两种口罩的只数相同,其中一次性医用外科口罩花费1600元,N95口罩花费9600元.已知一次性医用外科口罩的单价比N95口罩的单价少10元,那么一次性医用外科口罩的单价为多少元?设一次性医用外科口罩单价为x元,则列方程正确的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
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2022-09-01更新
|
62次组卷
|
2卷引用:安徽省六校教育研究会2022-2023学年高一上学期入学考试数学试题