己知二次函数y=3X^2-12X9当X取何值时.Y随X的增大而增大

用简练的话概括雾是怎样形成的 甲乙丙三人共存款1800元,当甲取出自己钱数的4/5后,甲乙丙三人存款比是1:3:4,甲原来存款多少元?最好有多种解法! 甲,乙,丙三人共存款1800元,甲取出自己的5分之4后,甲乙丙三人的存款比是1:3;4,甲原来存款多少?” 用蔗糖、奶粉和经蛋白酶水解后的玉米胚芽液,通过乳酸菌发酵可生产新型酸奶,下列相关叙述错误的是A．蔗糖消耗量与乳酸生成量呈正相关B．酸奶出现明显气泡说明有杂菌污染C．应选择处 用自己的话概括雾是怎么形成的.（33字） I can speak English _______ my motherA.better B.as good as C.the best 甲乙两人分别从AB两地同时出发,相向而行,甲车每小时行100KM,乙车每小时行90KM,当乙车行全程22分之9时,甲距离中点还有20KM,AB相距多少千米急 修改病句His mother can hardly speak English ,so can his father 两辆汽车从AB两地同时相对开出,甲每小时行80km,乙每小时行90km,两车在离中点20km处相遇 Nick,would you mind not earing those old jeans?They look terrible.--___.I'll put on another pair.A.Not at all B.Quite sure C.sorry D certainly not我觉得选A, can't,English,my,speak,father（.）连词成句 一个圆柱,底面直径是10dm,若高增加2cm,侧面积增加多少平方厘米?体积增加多少立方分米? would you mind not wearing those old jeans.They look terrible.--___.I will put on another pair.ANot at all. B Sorry C Certainly not.选哪,为什么其他两项不对?谢谢、 两个底面积相等的圆柱,一个圆柱的高为3.体积为42立方分米.另一个圆柱的高为4分米,体积是多少立方分米? Nick,would you mind ___ those old jeans? They look terrible.A. not to wear B.not wear C.wearing not D.not wearing “Would you mind not w___ those old jeans?" "OK.I'll put on another pair." “Would you mind not w___ those old jeans?" "OK.I'll put on another pair."请问横线上应填什么? poster 什么意思 poster-size是什么意思?Along the course of the Seine,poster-size reproductions of works by the Impressionists have been set uo at the spots.这句话中的poster-size如何理解? Poster Sessions是什么意思 that's a poster of his movie是什么意思 用宛如造句 用＂宛如＂造句 ……宛如…… （造句） 正弦函数与余弦函数有什么区别什么时候的函数图像使用正弦函数,什么时候又是用余弦函数的,此二者有什么区别 千里冰封万里雪飘是指哪里的冬天 有人帮我造个符号组成的翅膀吗? 求这种翅膀的组合符号,最好是组合好了给我复制, 仿佛、似乎和宛如造句 他的爸爸几乎不懂英语的英文翻译是his father can hardly know english我能不能把它翻译成 his father hardly konw english 也就是把那个can去掉 若不能请说明原因 谢谢 一个圆柱的底面直径是10厘米,若搞增加3cm,则侧面积增加多少平方厘米? CH2=CH2里面有的饱和键是?四个C-H键 合起来叫做饱和键吗