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2022年广东省广州市中考数学试卷
一、选择题(本大题共10小题,每题3分,总分值30分。在每题给出的四个选项中,只有一项为哪一项符合题目要求的〕
1.〔3分〕〔2022•广州〕四个数﹣3.14,0,1,2中为负数的是〔 〕
A.
﹣3.14
B.
0
C.
1
D.
2
2.〔3分〕〔2022•广州〕将图中所示的图案以圆心为中心,旋转180°后得到的图案是〔 〕
A.
png_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
B.
C.
D.
3.〔3分〕〔2022•广州〕⊙O的半径为5,直线l是⊙O的切线,那么点O到直线l的距离是〔 〕
A.
2.5
B.
3
C.
5
D.
10
4.〔3分〕〔2022•广州〕两名同学进行了10次三级蛙跳测试,经计算,他们的平均成绩相同,假设要比较这两名同学的成绩哪一位更稳定,通常还需要比较他们成绩的〔 〕
A.
众数
B.
中位数
C.
方差
D.
以上都不对
5.〔3分〕〔2022•广州〕以下计算正确的选项是〔 〕
A.
ab•ab=2ab
B.
〔2a〕3=2a3
C.
3﹣=3〔a≥0〕
D.
•=〔a≥0,b≥0〕
6.〔3分〕〔2022•广州〕如图是一个几何体的三视图,那么该几何体的展开图可以是〔 〕
A.
B.
C.
D.
7.〔3分〕〔2022•广州〕a,b满足方程组,那么a+b的值为〔 〕
A.
﹣4
B.
4
C.
﹣2
D.
2
8.〔3分〕〔2022•广州〕以下命题中,真命题的个数有〔 〕
①对角线互相平分的四边形是平行四边形;
②两组对角分别相等的四边形是平行四边形;
③一组对边平行,另一组对边相等的四边形是平行四边形.
A.
3个
B.
2个
C.
1个
D.
0个
9.〔3分〕〔2022•广州〕圆的半径是2,那么该圆的内接正六边形的面积是〔 〕
A.
3
B.
9
C.
18
D.
36
10.〔3分〕〔2022•广州〕2是关于x的方程x2﹣2mx+3m=0的一个根,并且这个方程的两个根恰好是等腰三角形ABC的两条边长,那么三角形ABC的周长为〔 〕
A.
10
B.
14
C.
10或14
D.
8或10
二、填空题〔本大题共6小题,每题3分,总分值18分〕
11.〔3分〕〔2022•广州〕如图,AB∥CD,直线l分别与AB,CD相交,假设∠1=50°,那么∠2的度数为.
13.〔3分〕〔2022•广州〕分解因式:2mx﹣6my=.
14.〔3分〕〔2022•广州〕某水库的水位在5小时内持续上涨,初始的水位高度为6米,水位以每小时0.3米的速度匀速上升,那么水库的水位高度y米与时间x小时〔0≤x≤5〕的函数关系式为.
15.〔3分〕〔2022•广州〕如图,△ABC中,DE是BC的垂直平分线,DE交AC于点E,连接BE.假设BE=9,BC=12,那么cosC=.
16.〔3分〕〔2022•广州〕如图,四边形ABCD中,∠A=90°,AB=3,AD=3,点M,N分别为线段BC,AB上的动点〔含端点,但点M不与点B重合〕,点E,F分别为DM,MN的中点,那么EF长度的最大值为.
三、解答题〔本大题共9小题,总分值102分,解容许写出文字说明、证明过程或演算步骤〕
17.〔9分〕〔2022•广州〕解方程:5x=3〔x﹣4〕
18.〔9分〕〔2022•广州〕如图,正方形ABCD中,点E,F分别在AD,CD上,且AE=DF,连接BE,AF.求证:BE=AF.
19.〔10分〕〔2022•广州〕A=﹣
〔1〕化简A;
〔2〕当x满足不等式组,且x为整数时,求A的值.
20.〔10分〕〔2022•广州〕反比例函数y=的图象的一支位于第一象限.
〔1〕判断该函数图象的另一支所在的象限,并求m的取值范围;
〔2〕如图,O为坐标原点,点A在该反比例函数位于第一象限的图象上,点B与点A关于x轴对称,假设△OAB的面积为6,求m的值.
21.〔12分〕〔2022•广州〕某地区2022年投入教育经费2500万元,2022年投入教育经费3025万元.
〔1〕求2022年至2022年该地区投入教育经费的年平均增长率;
〔2〕根据〔1〕所得的年平均增长率,预计2022年该地区将投入教育经费多少万元.
22.〔12分〕〔2022•广州〕4件同型号的产品中,有1件不合格品和3件合格品.
〔1〕从这4件产品中随机抽取1件进行检测,求抽到的是不合格品的概率;
〔2〕从这4件产品中随机抽取2件进行检测,求抽到的都是合格品的概率;
〔3〕在这4件产品中参加x件合格品后,进行如下试验:随机抽取1件进行检测,然后放回,屡次重复这个试验,通过大量重复试验后发现,抽到合格品的频率稳定在0.95,那么可以推算出x的值大约是多少
23.〔12分〕〔2022•广州〕如图,AC是⊙O的直径,点B在⊙O上,∠ACB=30°
〔1〕利用尺规作∠ABC的平分线BD,交AC于点E,交⊙O于点D,连接CD〔保存作图痕迹,不写作法〕
〔2〕在〔1〕所作的图形中,求△ABE与△CDE的面积之比.
24.〔14分〕〔2022•广州〕如图,四边形OMTN中,OM=ON,TM=TN,我们把这种两组邻边分别相等的四边形叫做筝形.
〔1〕试探究筝形对角线之间的位置关系,并证明你的结论;
〔2〕在筝形ABCD中,AB=AD=5,BC=CD,BC>AB,BD、AC为对角线,BD=8,
①是否存在一个圆使得A,B,C,D四个点都在这个圆上假设存在,求出圆的半径;假设不存在,请说明理由;
②过点B作BF⊥CD,垂足为F,BF交AC于点E,连接DE,当四边形ABED为菱形时,求点F到AB的距离.
25.〔14分〕〔2022•广州〕O为坐标原点,抛物线y1=ax2+bx+c〔a≠0〕与x轴相交于点A〔x1,0〕,B〔x2,0〕,与y轴交于点C,且O,C两点间的距离为3,x1•x2<0,|x1|+|x2|=4,点A,C在直线y2=﹣3x+t上.
〔1〕求点C的坐标;
〔2〕当y1随着x的增大而增大时,求自变量x的取值范围;
〔3〕将抛物线y1向左平移n〔n>0〕个单位,记平移后y随着x的增大而增大的局部为P,直线y2向下平移n个单位,当平移后的直线与P有公共点时,求2n2﹣5n的最小值.
2022年广东省广州市中考数学试卷
参考答案与试题解析
一、选择题(本大题共10小题,每题3分,总分值30分。在每题给出的四个选项中,只有一项为哪一项符合题目要求的〕
1.〔3分〕〔2022•广州〕四个数﹣3.14,0,1,2中为负数的是〔 〕
A.
﹣3.14
B.
0
C.
1
D.
2
考点:
正数和负数.菁优网版权所有
分析:
根据负数是小于0的数,可得答案.
解答:
解:四个数﹣3.14,0,1,2中为负数的是﹣3.14,
应选:A.
点评:
此题考查了正数和负数,解决此题的关键是小于0的数是负数.
2.〔3分〕〔2022•广州〕将图中所示的图案以圆心为中心,旋转180°后得到的图案是〔 〕
A.
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1b1y/rVyLFWxXH94+kN0eu9yZVSx0abWLWNsD2W8kOAQ0rl5DQqG9fcWQkYySPuwD3bCXtQF8HSRUVYWoi5duvDEImkIV02GgiPL6blda6bTU21vpRuVYbjReqxZNVo08Y9UtC+LIgVbadv7r9GT96hjvsrzXhcgvnXZeIrZE2byec3EtGnT2E5ZRSTYZAB435O/W42lW/g0lwq8SoA4P/KkQXMfEC3Opc1LxlIrtfOU3r5BecoDP/427yPcE6b7HDNj2FNqlSnjv
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