1 . 如图,在平面直角坐标系中,各坐标分别为
,
,
,
,
,
,
,
,
,
,
,则依图中所示规律,
的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cb590333dde01b3d37661389af4004f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81c733f81d34207dc3a5a50ebfb62485.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/901df3c72bbe7bf74721927d5040df92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b50032277c131ed9de6f81561547e315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18ea5acf902519039b660879c1a32cc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7420b22c253407d8fbe0d1c4f6b6a300.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d35db446f87ace567140f1358acd107.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4e69b18f9517aa49f002163f97a2de4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f46320f5859ffbb9d44449a7fcb73b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5372db5d4b5b160fc2ea5ca821c018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ddbff30debdb0ab7d7a07a17d9861a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e77973387dada13dd03c0458028cbe46.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . “人人关心节水,时时注意节水”,善于探究的小新同学观察到一个水龙头因损坏而不断地向外滴水,为探究其漏水造成的浪费情况,小新同学用一个带有刻度的量筒放在水龙头下面装水,每隔一分钟记录量筒中的总水量,但由于操作延误,开始计时的时候量筒中已经有少量水,因而得到如下表的几组数据:
结合表中数据的规律请你估算在
分钟时测量量筒的总水量是__________ 毫升.
时间![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
总水量![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/843c9013e16ce26a4be297f1b61419fd.png)
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3 . 如图,
为等腰直角三角形,
,以斜边
为直角边作等腰
, 再以
为直角边作等腰
,…,按此规律作下去便得到了一个海螺图案,则
的长度为________ . (用含n的式子表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15536798ab47cadce6d4d80f542051f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee5747ae1c372be1170242c4aecee5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c76916c6ff302cf4fb4b6ace5bb3a95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c80ca3761aedb2416aeff29acdcb5407.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/181f7b988095b7285557491c7bb2fb5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c7c555197ee0ba4c6ce1d2de599a1ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/337d0dc1076cfdb02ffb40bf4dac0d90.png)
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2024-04-26更新
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76次组卷
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8卷引用:2022年宁夏银川市第十五中学中考数学一模试题
2022年宁夏银川市第十五中学中考数学一模试题四川省眉山市仁寿县2022-2023学年八年级上学期期末数学试题(已下线)专题3.6 勾股定理章末八大题型总结(培优篇)-2023-2024学年八年级数学上册举一反三系列(苏科版)(已下线)专题1.6 勾股定理章末八大题型总结(培优篇)-2023-2024学年八年级数学上册举一反三系列(北师大版)(已下线)专题2.14 特殊三角形章末十八大题型总结(培优篇)-2023-2024学年八年级数学上册举一反三系列(浙教版)(已下线)专题14.6 勾股定理章末八大题型总结(培优篇)-2023-2024学年八年级数学上册举一反三系列(华东师大版)湖北省孝感市汉川市2023-2024学年八年级下学期期中数学考题2024年江苏省苏州市吴江区中考数学二模试题
4 . 如图,边长为
的大正方形内有一个边长为
的小正方形.
(2)比较(1)中的结果,请你写出一个非常熟悉的乘法公式__________.
(3)【问题解决】利用(2)中的公式解决问题∶
①已知
,则
的值为__________;
观察下列计算结果∶
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dc651ffe345f891d6affa674098ebe6.png)
②用你发现的规律并结合(2)的公式,直接写出下面这个算式的结果,井写出这个结果的个位数字.
_________;其个位数字是∶_________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)比较(1)中的结果,请你写出一个非常熟悉的乘法公式__________.
(3)【问题解决】利用(2)中的公式解决问题∶
①已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/690bd794f831d4ae84282d8b365a276b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe9bf647642e5ee3f8b54f7de4926685.png)
观察下列计算结果∶
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dc651ffe345f891d6affa674098ebe6.png)
②用你发现的规律并结合(2)的公式,直接写出下面这个算式的结果,井写出这个结果的个位数字.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90861d2ebfde15355a822822c4226f64.png)
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名校
5 . 烷烃是一类由碳、氢元素组成的有机化合物,在生产生活中可作为燃料、润滑剂等原料,也可用于动、植物的养护.通常用碳原子的个数命名为甲烷、乙烷、丙烷、
、癸烷(当碳原子数目超过10个时即用汉文数字表示,如十一烷、十二烷
等,甲烷的化学式为
,乙烷的化学式为
,丙烷的化学式为
,其分子结构模型如图所示,按照此规律,十二烷的化学式为 ( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07096af3b99fd1cb11c31f19a2c6408e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14be3a67d7ff26e1850b3d5f891b7e9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1bafc512da1234e0ac30a6adcac9f4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/854e45052229c24f14cf4db7a1e3c419.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a633a5f87d429df1a9c750d10b3ee1b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-03-21更新
|
466次组卷
|
7卷引用:2024年宁夏银川市第十中学中考二模数学试题
名校
6 . 如图,在平面直角坐标系中,点
在
轴的正半轴上,
,将
绕点
顺时针旋转
到
,扫过的面积记为
,
交
轴于点
;将
绕点
顺时针旋转
到
,扫过的面积记为
,
交
轴于点
;将
绕点
顺时针旋转
到
扫过的面积记为
;
;按此规律,则
为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52705567101a48893de582656ef41527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4195334905e2f190f958dbf5951456f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bfa916d4cb008111120a8e7728402cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c76916c6ff302cf4fb4b6ace5bb3a95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/181f7b988095b7285557491c7bb2fb5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94898fe181e671162fcb07c84267aeb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e47cd514b2920609e3781c87df6ab70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bfebbfa1df7fa250fab46751b8c52a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f346cb68d9fba5dc43b0c48516a5f543.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07096af3b99fd1cb11c31f19a2c6408e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b50ec7342673cc1f11b613c3efd3c6c.png)
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2024-03-17更新
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125次组卷
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2卷引用:2023年宁夏银川市兴庆区唐徕中学中考数学三模模拟试题
7 . 观察下列各式:
;
;
;
;….
(1)用你发现的规律填写下列式子的结果:
;
(2)用你发现的规律计算:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f412c39f13c11569ef684cb69c6d795.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e0992b98b5dad14df6706eb021fc11e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b94b5e45424e37d0de21a28dfb00b01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c261e35f8b63a0af023456b52ffd5d00.png)
(1)用你发现的规律填写下列式子的结果:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a6b0ed8d16434f4d670b885383a55e9.png)
(2)用你发现的规律计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d6bf6ea0731473038e437d1830499bd.png)
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8 . 如图所示,直线
与x轴、y轴分别交于A,B两点,
绕点A顺时针旋转
后得到
按此规律继续旋转,则第2025次旋转结束后,点
的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6b098e17fa76c648424e9cadf558cc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/104402b83b23c55eabde67911abf5b03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6df4c1fbc5cff902a8b9936dcb07e11b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-04-17更新
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227次组卷
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4卷引用:2024年宁夏回族自治区 银川市 兴庆区银川市第十七中学二模检测数学试题
2024年宁夏回族自治区 银川市 兴庆区银川市第十七中学二模检测数学试题2024年河南省重点中学九年级三模考试数学模拟试题(已下线)热点09 图形变化(平移、旋转、对称)(9大题型+满分技巧+限时分层检测)-2024年中考数学【热点·重点·难点】专练(广东专用)(已下线)第3章 图形的平移与旋转 全章热门考点专练(4个概念3个性质1个作图3个技巧2种思想)原卷版
9 . 我国古代数学中的“杨辉三角”是重要的成就,它的发现比欧洲早五百年左右,(如图),这个三角形给出了
(
=
,
,
,
,
,
)的展开式(按
的次数由大到小顺序排列)的系数规律.例如,第三行的三个数
,
,
,恰好对应
展开式中各项的系数;第五行的五个数
,
,
,
,
,恰好对应着
展开式中各项的系数.则
展开式中各项系数的和为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4832ee982c0510bca56e3988f82844d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/375d440fa0c1da0617388f0fc270542c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fce92c8101366cb088847ff1720f16b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a034564965ad4782625ee8f13fd5e99d.png)
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10 . 观察下列等式①
的解是
;②
的解是
;③
的解是
;④
的解是
.根据你发现的规律直接写出第n个方程和它的解____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a869872eed8b08c0c82496857eda026.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35bf234384baf55d5162ba18a3636305.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa0c1273e29e3847706e6bb36531af51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c83f403d5c71089a33a37f1018a5509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
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