1 . 解分式方程
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ba2101c4c3b7c9d9336e3f89cda87d.png)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ba2101c4c3b7c9d9336e3f89cda87d.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae6bef230dd6577deb5ca7c6cd2e41e7.png)
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2 . “唐时良辰,潮启长安”,西安新晋开放的“长安十二时辰”主题街区是宝藏唐风游玩打卡地.一个周末上午8:00,小张自驾小汽车从家出发,带全家人去“长安十二时辰”游玩,小张驾驶的小汽车离家的距离y(千米)与时间t(时)之间的关系如图所示,请结合图象解决下列问题:
(2)在去“长安十二时辰”主题街区的路上,汽车进行了一次加油,之后平均速度比原来增加了20千米/时,试求他加油共用了多少小时?
(3)如果汽车油箱中原来有油25升,在行驶过程中,平均每小时耗油10升,问小张在加油站至少加多少油才能开回家?
(2)在去“长安十二时辰”主题街区的路上,汽车进行了一次加油,之后平均速度比原来增加了20千米/时,试求他加油共用了多少小时?
(3)如果汽车油箱中原来有油25升,在行驶过程中,平均每小时耗油10升,问小张在加油站至少加多少油才能开回家?
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3 . 计算:
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/694f4e69226e34d04774a7cd28ae7cb3.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6bfc942d15001ff04cb4caaddfbf294.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cde60c0dd65d46e72b4cea5f00db966f.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fda8e5bc8891b251552adbd6136c277.png)
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4 . 等腰三角形的周长为16厘米,其中一边长为5厘米,则该等腰三角形的底边长为_________ .
您最近一年使用:0次
5 . 如图,等腰直角
中,
,
于
,
的平分线分别交
、
于
、
两点,
为
的中点,延长
交
于点
,连接
,
.下列结论:①
;②
;③
是等边三角形;④
;⑤
.其中正确的结论有( )
![](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/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5d8e33929752b1cb4dd36ee9b98b45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d38d97f03faed3152db2fd3bd1919944.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/660f1957af9e41714cef8a14ba18e8ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af29505e20d3f1a939cf44ca48b0f9c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6207becb610ae451b4860bdf877b27b.png)
A.②③⑤ | B.①③④ | C.②③④⑤ | D.①②④⑤ |
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6 . 如图,已知
,
,
,
.
是平行四边形.
(2)若
的面积是
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06a2ab6940dca62be1f3b2b5f8531990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/226c231c1150e27c34eb787a46b02ea8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d730ae4307db56b47849c3a19dedfb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1aa6481beb14c81b1371fdcede025b5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/164a4df60a15587971e883cf557b5ce2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b515965c22d2950b592c096c6e3bdfd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
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7 . 如图,线段
绕某一点逆时针旋转一定的角度得到线段
(其中
与
是对应点),利用尺规确定旋转中心
.(保留作图痕迹,不写作法)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea74bcb2642f3bdeb0f6d67b5baca43a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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8 . 先化简
,然后从
,
,
这三个数中选一个合适的数作为
的值代入求值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/623ab2b35f74aa0e5a2066bba52ed91a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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9 . 计算
(1)解不等式组:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc06ea95b5d397831c748340e10b73d.png)
(2)因式分解:
(1)解不等式组:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc06ea95b5d397831c748340e10b73d.png)
(2)因式分解:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e0415a1006d9609b5dcda1664cc0155.png)
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10 . 如图,四边形
中,
,
,
,
,点
、
分别是对角线
,边
上的动点,且
.若
是
的中点,
是
的中点,则
的最小值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd95dc30c0344788b94289c464a3158e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/363daa5591a227995ed86ccab43a9b12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e918b70b02a73685e3c536c7f380e2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a58a622e2b1a239f2f96aa1501e9799.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0222ce6a9176087111b5ce4cf204bb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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