1 . 若整数a使得关于x的不等式组
有且仅有5个整数解,且使关于y的一元一次方程
的解满足
.则所有满足条件的整数a的值之和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e050cbaf2494cbb0b7c3d9d2227238.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67b58c8a5d6e3feed69afcf2c7ec34a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ec11993671949a07f4566c0e248050.png)
A.![]() | B.24 | C.![]() | D.27 |
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2 . 下面是一个被墨水污染过的方程:,答案显示此方程的解是
,被墨水遮盖的是一个常数,则这个常数是( )
A.1 | B.![]() | C.![]() | D.![]() |
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3 . 解方程(组)
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b75f202e6dcce5cec6433a5e36738b.png)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b75f202e6dcce5cec6433a5e36738b.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac90608eb8e86893d36ebf1db4325101.png)
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4 . 用“※”定义了一种新运算:对于任意有理数a和b,规定
.
例如:
,若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3927d7ea069fd4d047f41e243f275e57.png)
例如:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8496b659725fae5179a3085d89043926.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fa0626c147bcc88e311d6443b976d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e16aa7d5d03cf1cce241efb20cd90da6.png)
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5 . 已知
是方程
的一个解,那么
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62987109bb8e5e8fb4228ebeea5fd2b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25363ab206f49ebcc8731b9ae34d9da8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 解下列方程(组).
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f349a661f80d2e64da6858db1e9d552.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9da7f14cd46dfcd44aa478a46ebbab10.png)
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7 . 在平面直角坐标系
中,对于不同的两点
,若点
到
轴,
轴的距离的较大值等于点
到
轴,
轴的距离的较大值,则称点
互为“最距等点”.例如:点
,
互为“最距等点”;点
,
互为“最距等点”.已知点
与点
互为“最距等点”,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f44755c5fee4b90266eac73ad47a128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f44755c5fee4b90266eac73ad47a128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97fe88412da03cc114f2250593293217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20660e49954f09601cbf528a7f436fca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27c59a593a0dd02859364a57fd100c55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcbcd0aebdd8bd688d108834747009f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b676f0c25a2c157472836924ff17322b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5f7447a1d2a826f1b1c0430029dd08d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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8 . 若关于
的方程
的解是
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1726153aec3ca23df12a286515fa4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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9 . 若
是关于x,y的二元一次方程
的一组解,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f93169d14edf4ebc44b9695763527c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2940db96f783d8b3d9b00eb11de3c7c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.3 | B.2 | C.![]() | D.5 |
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2024-06-10更新
|
80次组卷
|
3卷引用:安徽省芜湖市无为市部分学校2023-2024学年七年级下学期月考数学试题
10 . 定义一种新运算:
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dc40cae2a8eeb1758008013d3a56c68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc0c52b7678d29c0e4a34e085a5b0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
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