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典中点 24秋九年级数学上同步训练含参考答案北师大版
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这是一份典中点 24秋九年级数学上同步训练含参考答案北师大版,文件包含阶段拔尖专训3特殊四边形中的图形变换问题pptx、阶段拔尖专训11相似三角形的模型pptx、阶段拔尖专训1与正方形有关的模型pptx、测素质相似三角形的判定pptx、全章热门考点整合应用pptx、测素质反比例函数的图象与性质pptx、测素质反比例函数的应用pptx、测素质特殊平行四边形pptx、全章热门考点整合应用pptx、123矩形的性质与判定的综合应用pptx、测素质一元二次方程根与系数的关系及其应用pptx、专题2特殊平行四边形中的折叠问题pptx、测素质相似三角形的性质及应用pptx、阶段拔尖专训13反比例函数与几何图形的综合应用pptx、472相似三角形的周长和面积pptx、测素质平行线分线段成比例pptx、阶段拔尖专训12反比例函数图象与性质综合pptx、阶段拔尖专训6一元二次方程根与系数关系的应用pptx、阶段拔尖专训4特殊四边形中的动点与最值问题pptx、122矩形的判定pptx、312利用概率判断游戏的公平性pptx、121矩形的性质pptx、25一元二次方程的根与系数的关系pptx、42平行线分线段成比例pptx、阶段拔尖专训5配方法的应用pptx、113菱形的性质与判定的综合应用pptx、测素质投影与视图pptx、45相似三角形判定定理的证明pptx、测素质一元二次方程及其解法pptx、481位似图形及其性质与画法pptx、622反比例函数的性质pptx、全章热门考点整合应用pptx、131正方形的性质pptx、111菱形的性质pptx、441两角分别相等的判定方法pptx、231公式法pptx、阶段拔尖专训8一元二次方程的求解与几何图形结合pptx、24用因式分解法求解一元二次方程pptx、221配方法1pptx、全章热门考点整合应用pptx、专题5概率应用的三种常考类型pptx、阶段拔尖专训7与一元二次方程求解有关的新定义题pptx、212一元二次方程的近似解pptx、442两边成比例且夹角相等的判定方法pptx、621反比例函数的图象pptx、测素质概率的计算pptx、全章热门考点整合应用pptx、112菱形的判定pptx、61反比例函数pptx、专题7反比例函数中k的几何意义pptx、132正方形的判定pptx、471相似三角形对应线段的性质pptx、222配方法2pptx、43相似多边形pptx、专题1中点四边形pptx、482平面直角坐标系中的位似变换pptx、211认识一元二次方程pptx、专题6证明比例等积式的四种常用方法pptx、63反比例函数的应用pptx、261用一元二次方程解决几何应用问题pptx、262用一元二次方程解决实际应用问题pptx、311用树状图或表格求概率pptx、443三边成比例的判定方法pptx、313利用概率玩“配紫色”游戏pptx、阶段拔尖专训2特殊四边形与等边三角形综合pptx、523由三视图确定物体的形状pptx、232用公式法解决面积问题pptx、46利用相似三角形测高pptx、阶段拔尖专训10与一元二次方程求解有关的阅读理解题pptx、专题3一元二次方程的五种解法pptx、专题4一元二次方程的其他应用pptx、522直棱柱的三视图pptx、412等比性质pptx、411线段的比和成比例线段pptx、专题8反比例函数与一次函数的综合pptx、32用频率估计概率pptx、阶段拔尖专训9构造一元二次方程解题pptx、511投影与中心投影pptx、444黄金分割pptx、全章热门考点整合应用pptx、512平行投影pptx、521简单几何体的三视图pptx、期末综合素质评价doc、第一章综合素质评价doc、第二章综合素质评价doc、第五章综合素质评价doc、第六章综合素质评价doc、第三章综合素质评价doc、第四章综合素质评价doc等89份试卷配套教学资源,其中试卷共172页, 欢迎下载使用。
北师版 九年级上第三章 概率的进一步认识专题5 概率应用的三种常考类型1D234561.[2023合肥瑶海区一模]苯丙酮尿症是常染色体上隐性基因控制的遗传病,主要表现为智力发育落后,生长发育受限和精神异常等,苯丙酮尿症由一对基因(A,a)控制,体内由成对基因AA,Aa控制的个体是正常的,而体内由成对基因aa控制的个体患病,设母亲和父亲的基因是Aa,那么他们的孩子不患苯丙酮尿症的概率是( )【点拨】【答案】D列表如下: 返回2.[2023永城二模]《水浒传》是中学生必读名著之一,王林将水浒人物宋江和李逵的画像及其绰号制成4张无差别卡片(除图案和文字不同外,其他完全相同),将卡片背面朝上洗匀,从中随机抽取两张,则抽取的卡片人物画像与绰号完全对应的概率是________.【点拨】把4张卡片从左向右分别记为A,B,C,D,画树状图如图: 返回3.某同学在学习完电学知识后,用四个开关A,B,C,D,一个电源和一个灯泡设计了如图所示的电路图.(1)任意闭合A,B,C,D中的一个开关,则灯泡发光的概率为________;(2)任意闭合A,B,C,D中的两个开关,请用画树状图或列表的方法求灯泡发光的概率.解:画树状图如图: 返回4.一个不透明的口袋中装有三个分别写有数字2,4,6的小球(小球除数字外,其余都相同),另有三张背面完全一样,正面分别写有数字6,7,8的卡片.现从口袋中任意摸出1个小球,再从这三张背面朝上的卡片中任意摸出1张卡片.(1)请用列表或画树状图的方法,列出所有可能出现的结果;解:列表如下:(2)小红和小莉做游戏,制定了两条游戏规则.规则1:若两次摸出的数字中至少有一次是“6”,小红赢;否则,小莉赢.规则2:若摸出的卡片上的数字是小球上数字的整数倍,小红赢;否则,小莉赢.小红想在游戏中获胜,她应该选择哪一条规则?请说明理由. 返回5.为扎实推进“五育并举”工作,某校利用课外活动时间开设了舞蹈、篮球、围棋和足球四个社团活动,每名学生只选择一项活动参加.为了解社团活动开展情况,学校随机抽取部分学生进行调查,将调查结果绘成如下表格和扇形统计图.参加四个社团活动人数统计表请根据以上信息,回答下列问题:(1)抽取的学生共有________人,其中参加围棋社的有________人;(2)若该校有3 200人,估计全校参加篮球社的学生有多少人?20040(3)某班有3男2女共5名学生参加足球社,现从中随机抽取2名学生参加学校足球队,请用画树状图或列表的方法说明恰好抽到一男一女的概率.解:画树状图如图: 返回6.[2024台州模拟]2023年台州市体育考试成绩总分为40分,其中平时成绩10分,现场考试成绩30分,小华同学分别选取了1 000米跑、引体向上、1分钟跳绳、排球垫球作为现场考试备选项目(每一个项目满分10分),如下表是他最近5次模拟考试成绩:(1)计算小华每一个项目5次考试的平均成绩;解:1 000米跑的平均成绩:(5+5+6+6+5)÷5=5.4(分),引体向上的平均成绩:(8+7+8+8+8)÷5=7.8(分),1分钟跳绳的平均成绩:(7+10+6+7+9)÷5=7.8(分),排球垫球的平均成绩:(10+10+10+10+10)÷5=10(分).(2)依据小华第一次模拟考试成绩,从四个项目中随机选取两个,得分之和高于16分的概率为________;【点拨】设1 000米跑5分为A,引体向上8分为B,1分钟跳绳7分为C,排球垫球10分为D.画树状图如图:(3)100米游泳作为替代类考试项目,可替代上述四个项目中任意一项,已知小华游泳能得满分,请你帮助小华确定另外两个中考体育项目,并说明你的理由.解:排球和引体向上.理由如下:排球的平均分最高,且均为满分,成绩稳定;引体向上和1分钟跳绳的平均分相等, 返回
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