1 . 下列图形都是由同样大小的“”按照一定规律所组成的,其中第①图形有1个“
”,第②个图形有5个“
”,第③个图形有11个“
”,第④个图形有19个“
”
按此规律排列下去,则第⑧个图形中“
”的个数为( )
A.71 | B.72 | C.55 | D.56 |
您最近一年使用:0次
2 . 如图,在四边形
中,
,
,连接
,满足
,
,
.动点
从点
出发,沿
以1个单位长度每秒的速度运动,到达点
时停止运动.连接
设点
的运动时间为
,
的面积为
.
与
之间的函数关系式以及对应的
的取值范围
(2)请在直角坐标系中画出
的图象,并写出函数
的一条性质;
(3)若函数
的图象与
的函数图象有两个交点,直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532aece6cfd67e2a97977eed978dbf2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5347fb06cc3e48a1fb482c8e30dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)请在直角坐标系中画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e2236083a2e2635c0e4cba51576b885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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3 . 如图,正方形
中,点E、F分别是
和
边的点,满足
,连接
,过点F作
,连接
,H是
上一点,且
,若
,则的
度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92034dd2bb9480b18709d01153467f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f128427e0e7632e6394dc8896d45e45a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab5814811059e40b53e9e5ba32b7c29d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ea39c156a4858d85b7f1238eca69f22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/300886dee13faa84b4ec97ea1f195e20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3eebdbeea7216d70968461cff5eba16.png)
A.![]() | B.![]() | C.![]() ![]() | D.![]() ![]() |
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4 . 如图,某公园有一条四边形的健身步道
,经测量.点
在点
的正西方向的4000米处,点
在点
的南偏西
方向的4400米处,点
在点
的正南方向,点
在点
的东南方向.
的长度;(结果保留根号)
(2)小文和小李跑步爱好者,两人相约同时从
点出发,小文沿线路
,小李沿线
,已知小文的平均速度为170米每分钟,小李的平均速度为190米每分钟,请通过计算,哪个先到达
处?(参考数据:
,
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb8e962e422c964ba4a6007a101f1536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(2)小文和小李跑步爱好者,两人相约同时从
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfd66776565f049eb453c14fcaf79234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3087da5c11909dab613378fee8d471fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c894b7d6baa55c80c64e74748dad898.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/460317e7c26f95b9b29cfe1a89b796d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb015b3adfab424c91f1ed8b123fc23c.png)
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5 . 如图,在平面直角坐标系中,抛物线
,交
轴于点A,交
轴于点
,
,连接
.
(2)点
是直线
下方抛物线上一动点,过点
作
轴交直线
于点
,
是
轴上一点,连接
,使
,求
的最大值及此时
点的坐标;
(3)将原抛物线沿
方向平移
个单位长度,在新抛物线上有一点
,使得
,请写出所有符合条件
的横坐标,并写出其中一种情况的过程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9553fb9beb9ed49ea5f7a0f077884d.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/82da09bb1fc439ec38bd46cc9d148c6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21556d091b3d5e599bed06e9d7ad0ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19409d6d120387b3bccd934c4911bb45.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70b32f59522eea44b24cdd4c2bc0406e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/490943a70a2046e8c4ffc0c01b512019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edf9b580a612ba863e6cab13151e7bf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)将原抛物线沿
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4056761b8f826eeb6ad8c9a151d3c9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9253f8913f9fd0099d2e89ed8965a703.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次
2024-06-06更新
|
280次组卷
|
2卷引用:重庆市城口县2023-2024学年九年级下学期期中数学试题
6 . 下列调查中,适合采用抽样调查的是( )
A.了解全市中学生每周使用手机的时间 |
B.对乘坐高铁的乘客进行安全检查 |
C.调查我校初三某班的视力情况 |
D.环保部门调查任河全域水质情况 |
您最近一年使用:0次
7 . 对于一个两位自然数
,将
的个位上的数字和十位上的数字交换位置记为
,若
,
,记
,计算![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3deaa1a99e419c5444d052071206d7f6.png)
________ ;若对于同样的两位p,q,个位数字相同,且
能被4整除,
,则满足条件的
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74fa38ac619507c8fdf614acf1fbd9f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a350211b9c40294c81c8dceb6e2c64f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f13793b24cf8f95f498b011cf51c0074.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c512263231e0b6b505a3727492087d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3deaa1a99e419c5444d052071206d7f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07389fb259531a36c78418a516936faa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acaf5a17a3e0ce8716e80610327a5f8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ca2b65a205a2c819b503022fdfac56.png)
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8 . 已知在
中,
,
为
边上一点.
,连接
,若
,
,
,求线段
的长;
(2)如图
,
是
边上的中点,点
、
分别是
、
边上的点,连接
,
,
,若
,
,
,请猜想
与
的数量关系,并证明你的猜想;
(3)如图
,在(2)问的条件下,将线段
绕着点
旋转得到线
,连接
,取
的中点
,点
是
垂直平分线上的点,将点
绕着点
顺时针旋转
得到点
,连接
、
、
,当
最小时,若
,
,请直接写出
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7099026716ee1821dd7d9f157dc055f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b0ecf99f87c482b90900fcadb8b17b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc75b0de577ae69af3d7bce59339b719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f3956f008cc29ca4bae44a087d5427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d3c9ce32b721995f355eea411340e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9847b9e734dcdbda3f82513e18c6181a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/697f330cacd90cc2f0822864e701db8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(3)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da650ee630c36fd5ce9abb4fb826df7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655cc150ddc9deba2254780984d0024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655cc150ddc9deba2254780984d0024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28b1ba4307cfde9b424d468bfcdf6c5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c1afee715f2a04fac1edfaa44e8b58d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/174f9ec74bd676b8a3005478cfe27076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4505508b3e36db64a207dcdaf8eb22dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c1afee715f2a04fac1edfaa44e8b58d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3505caf94539d51c4edba53a78ad0d3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9778e956af121ee80f545631ed612d59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910d83ea6a0c642ff58f7f0166df19d0.png)
您最近一年使用:0次
9 . 城口地处大巴山南麓,生态旅游资源得天独厚,今年3月8日,城口北屏乡“村光里”乡村旅游盛大开业,至开业以来,每周的客流量持续稳步增涨,开业第一周接待约5500人次,接待人数逐周增加,第三周的接待约7500人次.设开业以来游客每周平均增长率为
,根据题意,可列方程为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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10 . 一个不透明的盒子里放置分别标有“文、明、城、口”的四个小球,小球除汉字不同,其它完全相同,小明从盒中一次性随机摸出2个小球,则摸到的两个小球能组成“文明”一词的概率为____ .
您最近一年使用:0次