2009年恩施州数学中考题.pdf

《2009年恩施州数学中考题.pdf》由会员分享，可在线阅读，更多相关《2009年恩施州数学中考题.pdf（8页珍藏版）》请在淘文阁 - 分享文档赚钱的网站上搜索。

1、评卷人得 分认真填一填恩施州初中毕业生学业考试数学试题题号一二三四五六七八总分总分人得分友情提示：亲爱的同学，你好！今天是展示你才能的时候了，只要你仔细审题、认真答题，把平常的水平发挥出来，你就会有出色的表现，放松一点，相信自己的实力！1、试卷满分 120分，答卷时间120分钟；2、允许使用科学计算器.一、填空题：（请将答案填写题中的横线上本大题共8小题，每小题 3分，计 24分）1.9的算术平方根是.2某班共有 x个学生，其中女生人数占45%，用代数式表示该班的男生人数是 .3 我州的旅游收入达52644.85 万元，比增长了 40.7%.用科学记数法表示我州的旅游收入为元（保留三个有效数字

2、）.4分解因式：aa823=.5如图 1，已知 AB ED,B=58,C=35,则 D 的度数为 投一枚均匀的小正方体，小正方体的每个面上分别标有数字、.每次实验投两次，两次朝上的数字的和为的概率是7我市某出租车公司收费标准如图2所示，如果小明只有19元钱，那么他乘此出租车最远能到达公里处8、观察数表1-6151-110A-4-2015653-6-5-4-3-2-11-11111111根据表中数的排列规律，则字母A所表示的数是图1EDCBA评卷人得 分二、选择题：（下列各小题都给出了四个选项，其中只有一项是符合题目要求的，请将符合要求的选项前面的字母代号填写在下面的答题栏内.本大题共 8小题，

3、每小题3分，计 24分）题 号9 10 11 12 13 14 15 16 答 案9若a=3，则a的值是:A.-3 B.3 C.31 D.310下列计算正确的是：A.633)(xx B.2446aaa C.2224)()(cbbcbc D 236xxx11如图 3,长方体的长为15，宽为 10，高为 2 0，点 B离点 C的距离为 5，一只蚂蚁如果要沿着长方体的表面从点A爬到点 B，需要爬行的最短距离是:A.215 B.25 C.1055 D.3512如果一元一次不等式组axx3的解集为3x.则a的取值范围是:A.3a B.3a C.3a D.3a13一张正方形的纸片，剪去两个一样的小矩形得到

4、一个“E”图案，如图4 所示，设小矩形的长和宽分别为x、y，剪去部分的面积为20，若 2x 10，则 y 与 x 的函数图象是:14某种衬衣的价格经过连续两次降价后，由每件150元降至 96元，平均每次降价的百分率是：A.20%B.27%C.28%D.32%.如图 5，在 ABC 中，C=90,B=60,D是 AC 上一点，ABDE于E,且,1,2 DECD则BC的长为：A.2 B.334 C.32 D.3416.如图 6，O的直径 AB垂直弦 CD于 P，且 P是半径 OB 的中点，CD 6cm，则直径AB的长是:A.32cm B.23 cm C.24 cm D.34 cm 图5EDCBA仔

5、 细 选一选哟！文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:

6、CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 H

7、B7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV

8、6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编

9、码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3

10、 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6

11、ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8评卷人得 分三、解答题(本题共两个小题，每题8分,共计 16分)17.求代数式的值：)2422(4222xxxxxx，其中22x18.两个完全相同的矩形纸片ABCD、BFDE如图 6放置,BFAB.求证:四边形BNDM为菱形.解答应写出文字说明、证

12、明过程或演算步骤.请你一定要注意噢！ABCDEFMN图7文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3

13、Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9

14、X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q

15、8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2

16、D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4

17、H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D

18、8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8评卷人得 分四、解答题(本题满分 8分)19.，恩施州生产总值（GDP）为2000年以来年度首次实现两位数增速.根据图和表所提供的信息，解答下列问题：（注：生产总值=第一产业的产值+第二产业的产值+第三产业的

19、产值）（1）恩施州生产总值是的倍（精确到 0.1）；（2）恩施州第三产业的产值占当年全州生产总值的百分比为%,第三产业的产值为亿元（精确到 1亿）；（3）恩施州人均生产总值为元（精确到 1元），比上一年增长%（精确到 0.1%）；（4）从图中你得到的信息是：（写一条即可）.后面还有哦，请继续努力25.3%35.9%第二次产业第一次产业第三次产业2008年GDP 三次产业构成文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 Z

20、V6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档

21、编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U

22、3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6

23、 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8

24、文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V

25、9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3

26、Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8评卷人得 分五、解答题(本题共两个小题，每题8分,共计 16分)20.宽与长之比为1:215的矩形叫黄金矩形，黄金矩形令人赏心悦目，它给我们以协调，匀称的美感，如图9,如果在一个黄金矩形里画一个正方形，那么留下的矩形还是黄金矩形吗？请证明你的结论.21.在等腰三角形 ABC 中，AB=AC，O为AB 上一点，以 O为圆心、OB长为半径的圆交BC于D，DEAC 交AC 于E.(1).求证：DE是 O的切线.(2).若 O与AC相切于 F，AB=AC=5cm，53sin A，求 O的半径

27、的长.图 10EDOCBA图9FEDCBAFEDOCBA文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3

28、Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9

29、X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q

30、8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2

31、D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4

32、H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D

33、8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8评卷人得 分六、解答题(本题满分 10分)22.某超市经销A、B 两种商品，A 种商品每件进价20 元，售价30 元；B种商品每件进价35 元，售价48 元（1）该超市准备用800 元去购进A、B两种商品若干

34、件，怎样购进才能使超市经销这两种商品所获利润最大（其中B种商品不少于7 件）？（2）在“五一”期间，该商场对A、B两种商品进行如下优惠促销活动：打折前一次性购物总金额优惠措施不超过 300 元不优惠超过 300 元且不超过400 元售价打八折超过 400 元售价打七折促销活动期间小颖去该超市购买A种商品，小华去该超市购买B种商品，分别付款210元与 268.8元.促销活动期间小明决定一次去购买小颖和小华购买的同样多的商品，他需付款多少元？文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H

35、9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8

36、Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R

37、2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I

38、4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7

39、D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O

40、4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R1

41、0I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8评卷人得 分七、解答题(本题满分 10分)23.恩施州自然风光无限，特别是以“雄、奇、秀、幽、险”著称于世.著名的恩施大峡谷（A）和世界级自然保护区星斗山（B）位于笔直的沪渝高速公路X同侧，AB=50km,A、B到直线 X的距离分别为 10km和40km,要在沪渝高速公路旁修建一服务区P,向A、B两景区运送游客.小民设计了两种方案，图10（1）是方案一的示意图(AP与直线 X垂直，垂足为 P),P 到A、B的距离之和

42、S1=PA+PB；图10（2）是方案二的示意图(点A关于直线 X的对称点是 A，连接 BA交直线 X于点 P),P到A、B的距离之和 S2=PA+PB.(1).求S1、S2,并比较它们的大小.(2).请你说明 S2=PA+PB 的值为最小.(3).拟建的恩施到张家界高速公路Y与沪渝高速公路垂直，建立如图所示的直角坐标系，B 到直线 Y的距离为 30km,请你在 X 旁和 Y旁各修建一服务区P、Q,使P、A、B、Q 组成的四边形的周长最小.并求出这个最小值.图 11（1）PXBA文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 H

43、B7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV

44、6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编

45、码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3

46、 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6

47、ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文

48、档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9

49、U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8评卷人得 分八、解答题(本题满分 12分)24.如图，在ABC中，A90，10BC,ABC的面积为25，点D为AB边上的任意一点(D不与A、B重合)，过点D作DEBC，交AC于点E设xDE以DE为折线将ADE翻折，所得的DEA与梯形DBCE重叠部分的面积记为y.（1）用 x表示?ADE 的面积;（2）求出0 x5时 y与x的函数关系式；（3）求出5x10时y与x的函数关系式；（4

50、）当x取何值时，y的值最大？最大值是多少？恭喜你顺利完成答题，别忘了认真检查！CBA文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8V9U3 HB7O4R2D3Z6 ZV6R10I4H9X8文档编码:CL7D8Q8