1 . 已知
、
为非零常数,若
的解集是
,则
的解集是____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ae6c08e4c2f5db9a595dcdbd99f9896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4de944c19c2f2d1e88660eb805942e33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76ac72bde50772ef31b4d81567eb02ba.png)
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2021-09-30更新
|
140次组卷
|
3卷引用:陕西省渭南市澄城县2020-2021学年七年级下学期期末数学试题
2 . 已知
是关于
的一元一次不等式,求这个不等式的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd44a893ba078e9b8bee2e2c981896e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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3 . 若代数式
有意义,
应满足的条件是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4c9e81da7b6f1451aa22c32ddc7cb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 已知关于x的不等式
的解集为
,求m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5fdde1df644d6ed6adc2cab03afe84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
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5 . 解不等式组:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac3d78f12b10a62dd91f26d1db56c847.png)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac3d78f12b10a62dd91f26d1db56c847.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a123c1048672fa0965ce93948ce1aa.png)
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6 . 解不等式
,并把它的解集在如图的数轴上表示出来.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83e48cee5323a72f9f6ee9ca705f6526.png)
![](https://img.xkw.com/dksih/QBM/2021/7/16/2765693837557760/2802277808087040/STEM/52fbb48c-ecdd-4634-b6fa-6f691ca3d18f.png)
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7 . 已知关于
的一元一次不等式
的解集是
,如图数轴上的
,
,
,
四个点中,实数
对应的点可能是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d61776b451598bc56a08b3c4a2e9c33e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/193d546066e0756ae2f5f38618e88f95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2021-09-05更新
|
261次组卷
|
4卷引用:陕西省安康市紫阳县2020-2021学年七年级下学期期末考试数学试题
8 . 剧院举行新年专场音乐会,成人票每张
元,学生票每张
元,剧院制定了两种优惠方案,且每个团体购票时只能选择其中一种优惠方案,方案
:购买一张成人票赠送一张学生票;方案
:按总价的
付款.某校有
名老师与
名学生听音乐会,设用方案
和方案
付款的总金额分别为
(元)和
(元).
(1)分别求出
、
与
之间的函数关系式;
(2)请计算并确定出最省钱的购票方案.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7f27ebcef70a3ebbbe8d2e53ea0896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.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/28b4b06478c218a0e3421f8c52427c8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f555f37bb6b108cc135ffac7bf02cbae.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/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
(1)分别求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)请计算并确定出最省钱的购票方案.
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9 . 若关于x的分式方程
=1﹣
的解为非负数,则m的取值范围是 ___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5792f01ea6b24cce076cd6d3c6fcb020.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1083515db8cb2f4b63f864c3bf9394.png)
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10 . (1)若关于x的不等式
的解集中的任意x,都能使不等式
成立,求a的取值范围;
(2)若关于x的不等式组
有且只有两个整数解,求m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff8bbcb7de75ab439155641ac29d12f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6b7b6e8a385157247971ac0ba49fb22.png)
(2)若关于x的不等式组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f7af90e6172796b8410a0625d729309.png)
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