名校
1 . 下列计算:(1)
,(2)
,(3)
,(4)
,其中结果正确的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/555285d96653cc767690999a4fd6c792.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ad8ca08dc3781799163bc99f768c097.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ec2b6656dfc72b8af0868537992f717.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b0c647ed8951ac0a51b6d6952daa678.png)
A.1 | B.2 | C.3 | D.4 |
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名校
2 . (1)解方程:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67f9da93ffb16e3e15db5eb0b7a3618d.png)
(2)解方程:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbedb0bc1e0958362f677f1982aeb35b.png)
(3)计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7f87e583aeb8a2d4c940b1bbb4f2676.png)
(4)解不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67f9da93ffb16e3e15db5eb0b7a3618d.png)
(2)解方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbedb0bc1e0958362f677f1982aeb35b.png)
(3)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7f87e583aeb8a2d4c940b1bbb4f2676.png)
(4)解不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49257095d1cd741c9cd6c15343681280.png)
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3 . 已知
,则
值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/755bca260084d4bc232ef15297adab85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0aa7dd1c96dc650834555cc26dd3acb.png)
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4 . 投影仪是一种将电子图象或视频信号转换为光信号并通过光学系统放大投射到屏幕或墙壁上的设备.如图,某投影仪正对墙投屏,其光源离墙1米,离地
米,它透过方孔发射出来的上下两束光束的最大张角为
,并在上下调整机头摆动过程中发现(假设光源位置始终不变),墙上高为1米处始终能被照射到,若不考虑墙高,则投影仪发射的光线可能到达的最高位置与最低位置相差______ 米.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26b2cd9be79d300f762bad38ffc83606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
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5 . 如图,已知直线
与
轴交于点
,与
轴交于点
,点
在线段
上,
关于
轴的对称点为
,点
从
的运动过程中,
中依次出现的特殊三角形为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9427de5d22d37859a110dbb234313c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ba837391bb4af88a9a5042248b81e2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d487e6769c9f24ec76ccc83b8de4199a.png)
A.直角三角形![]() ![]() ![]() |
B.直角三角形![]() ![]() ![]() |
C.直角三角形![]() ![]() ![]() |
D.直角三角形![]() ![]() ![]() |
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6 . (1)解不等式组![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c15a0f2ec33997956cc5912a2fc874.png)
(2)计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c15a0f2ec33997956cc5912a2fc874.png)
(2)计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3320e6df5ac86637978238494fe6598.png)
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7 . 计算:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abc6ea2a064c9a1c422b57db3781fb7.png)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abc6ea2a064c9a1c422b57db3781fb7.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed39bab85f3924b0789c09492d0c6ffb.png)
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2024-02-18更新
|
287次组卷
|
3卷引用:浙江省宁波市象山县2023-2024学年七年级上学期期末数学试题
8 . 若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ae1357b114aee0b5dc93887aff9aa31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c886f4adb4ef49214f7437a2b47e3568.png)
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9 . 计算
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5370091eb963c9972e07c028677ea633.png)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5370091eb963c9972e07c028677ea633.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74b10da456c3b0f349b59b54f4ba44ea.png)
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2024-01-04更新
|
403次组卷
|
6卷引用:浙江省宁波市2023-2024学年八年级上学期期末数学试题
浙江省宁波市2023-2024学年八年级上学期期末数学试题河南省郑州市第一三五中学2023-2024学年八年级上学期期中数学试题(已下线)八年级数学开学摸底考(重庆专用,人教八上全册+二次根式)-2023-2024学年初中下学期开学摸底考试卷(已下线)专题16.11 二次根式的加减(分层练习)(提升练)-2023-2024学年八年级数学下册基础知识专项突破讲与练(人教版)(已下线)专题16.14+二次根式的运算100题(分层练习)(提升练)1-2023-2024学年八年级数学下册基础知识专项突破讲与练(人教版)(已下线)专题12.9 二次根式的加减(分层练习)(培优练)-2023-2024学年八年级数学下册基础知识专项突破讲与练(苏科版)
10 . (1)计算:
;
(2)解方程:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7c0f77dadcf29e9a9406c9d36c9b692.png)
(2)解方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41527a0e6cee74e1177777a168ec81de.png)
您最近一年使用:0次