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已知P为抛物线eqIdde46081cb1574b28826e9250a52ea3a4上一点,点MeqId4753e7fdd6334e82b8c1d970e56669b6,若eqIdcbbea087ea3a49c7b43376863fdef76e,则△POM(O为坐标原点)的面积为_____________
更新:2019/7/11难度系数:0.85题型:填空题组卷:66次
已知函数eqIde111cfc5928548ab96f5a1349e1314d2,则eqId71ed1c0be7f3421fb19fc8746e8559f2的值为___________
更新:2019/7/11难度系数:0.85题型:填空题组卷:139次
eqId64b9b599fdb6481e9f8d9a94c102300b中,已知eqIddceedd36b8db4747ac1b04a242da91b8,则eqIde6581f86694d4da4afaef4d6876ce375_______.
更新:2019/7/18难度系数:0.85题型:填空题组卷:90次
某学校甲、乙两个班各15名学生参加环保知识竞赛,成绩的茎叶图如下:
figure
则这30名学生的最高成绩是_______;由图中数据可得_______班的平均成绩较高.
更新:2019/7/18难度系数:0.85题型:填空题组卷:22次
从某小学随机抽取100名学生,将他们的身高数据(单位:厘米)按eqIde77b927336814ec1aee786b3560e288aeqId23f37e989bf44dcf8f16cecfd9a55fbdeqId0b1f2a90cd7648709db6456349638a7deqIdcea0bd59a0d74f289e01a413d2998fe9eqIdc632d6e9ef874e3b8c2119c80d9f0e14分组,绘制成频率分布直方图(如图).从身高在eqId88ae13154f774c02ae861d4673ef170ceqId4390df891742412a969162e759bf8162eqId68455cd582834d47b3714ef651777569三组内的学生中,用分层抽样的方法抽取18人参加一项活动,则从身高在eqIdec3be101b4734069b804dc4056e23d2b内的学生中选取的人数应为( )
figure
A.3B.4C.5D.6
更新:2019/7/18难度系数:0.85题型:单选题组卷:59次
已知直线eqId3f5e334f1e0b4e02927da927b5602d8eeqIdf1ed30649c3f4905bc10bd5b45d5e2b6,若eqId0680c299a651427c9959c6986abf1c2a,则实数eqId4d2187284c5d4de29906363f7d21f60f的值是(  )
A.eqIda86879ae304449a4a6e6461c485a1f13B.eqIdf1bd69290a464f71ac73b93c51985105C.eqIdfca343da1efc413487359c1551da9dbeD.eqIda86879ae304449a4a6e6461c485a1f13eqIdfca343da1efc413487359c1551da9dbe
更新:2019/7/18难度系数:0.85题型:单选题组卷:104次
eqId64b9b599fdb6481e9f8d9a94c102300b中,eqId1869d6848abc4c66a02564bb03715f66eqId24228649a3fe40209b032d25e715b16deqIdbb5947e8369946fba5aada921ee882c6,则eqId45efe8ebdf444addb2fd9e39ac69c8fd ( )
A.eqIdb050c41d1513409598c00ecfe0de8603B.eqId43059a1babed4850ab90728e475e4ce1C.eqId000aef5c9f2a4aa2881d8b6ed91fe140D.eqId97ce11ca59cc4da8b39247025a9746e5
更新:2019/7/18难度系数:0.85题型:单选题组卷:130次
已知函数eqIdf55f5ca616124d50b4e9b5ae5cd3e857
(1)当eqIda08ce385279d41c789695fb651b17890时,求不等式eqIdf7f529a187f74aac908d34875cab16af的解集;
(2)若eqId600b6790acc6413bbefa68910987b731的解集为R,求eqId70a27b6ddf6b478285353abb3b1f3741的取值范围.
更新:2019/7/17难度系数:0.85题型:解答题组卷:70次
函数eqIdd751178380a14bf7a551adfc6e5c00b6eqId92eccf002e654e8da54bc0e6868370c0的最大值是________.
更新:2019/7/17难度系数:0.85题型:填空题组卷:148次
在平面直角坐标系eqId2272a344734c4fb088737b84294f7219中,已知抛物线eqIde73f68c98d7c4129b2a24eed090438df的焦点为eqIdd5b10b2a13f148b78e0d5a1b820538fd,过点eqIdd5b10b2a13f148b78e0d5a1b820538fd的直线eqId417e80f1349244878d01fe90e0891f5f与抛物线eqId19a4eb16029e4550a14f2afe4741a3c3交于eqIdd7be5abad1e34f6db17a56660de8d54feqIdca9308a4ebd84ed8a28d8a519a8dbb39两点,若eqIddeac4f0772a74c9ba1a2c7b4ba309f2a,则eqId81232f29758e4449908f62031953893f的面积为(    )
A.eqId9a19f81624ec431494b1feeb88f12bdfB.eqIda2a0ce3781fa4c26b624f5966b7dee44C.eqIdf7d6b53ad41c46fdaa1cbdb9c26ced4dD.eqId7bcd573cee334383ad72cc4b179fcfb3
更新:2019/7/17难度系数:0.85题型:单选题组卷:57次
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