达瓦morethan

物理一道应用题的计算,怎么算 线段AB等于3cm,画出到点A距离大于2cm的点所组成的线段 已知线段AB=4CM,和点A,B的距离都等于3CM的点的集合是? 左边三点水右边吾字怎么读? 17.5升多少斤 怎么算的 英语翻译In effect,in trying to demonstrate that the imagination is more profound and less submissive to the intellect than Saint-Beuve assumed,Proust elicited vital memories of his own and,finding subtle connections between them,began to amass th 英语翻译看在我大过年的还在练翻译的份上,【我们建立以业绩和能力为导向的、科学的人才绩效评价制度.】括号里面的这句话如何翻译? 英语句子翻译难不难? 英语翻译1.Political theories have,in fact,very little more to do with musical creation than electronics theories have.2.The persons or parties subventioning musical uses should wish to retain veto power over the works used is not at all surprisin 一道高中物理题,想不明白啊啊啊~~~~~~~~~~~~~~~~~~~~~~~~~~~~A、B两列火车,在同一轨道上同向行驶,A车在前,其速度vA=10m/s,B车在后,速度vB=30m/s,因大雾能见度很低,B车在距A车x0=75m时才发现前方有A车,这 英语翻译请把括号里的重点翻译 He （runs away）with his two friends,Huck Finn and Joe,to an island in the diddle of the Mississippi River for several days.（With Huck he goes looking for treasure,with Becky he gets lost in a cave,） a 英语翻译a new study of more than 2500 teens made by Yahoo 英语翻译whoever working at any scientific problem,has occasion to study the inquiries into the same problem by some fellow-worker in the years long gone by,comes away from that study humbled by one or other of two different thoughts 比较难的英语句子翻译1.The explosion of microscale product development in consumer markets including healthcare, communications, and electronics, to name a few, has the potential to significantly improve quality of life and personal well bei 已知x的平方+x+1=21 则(7-x)(x+8)的值 设f(x)=2(log2x)2+2alog21/x +b,已知x=1/2时,f(x)有最小值-8, 已知(x-y)^2=8,xy=2,求(x+y)^2,x^4+x^4的值2. 已知x+y=4,x^2+y^2=10,求x^4+y^4的值3. 已知x+1/x=4,求①x^2+1/x^2;②(x-1/x)^2快一点啊哈~~ 高中物理 啊啊啊啊啊啊啊啊啊啊啊啊啊如图a所示,一轻质弹簧的下端固定在水平面上,上端放置一质量为2kg的物体（物体与弹簧不连接）,初始时物体处于静止状态．现用竖直向上的拉力F作用 两根同种材料制成的电阻丝ab,分别接在两个电路中,a电阻丝的长度和直径均为b电阻丝长度和直径的2倍,若要使两根电阻丝在电路中消耗的电功率相同,则加在两电阻丝上电压之比Ua：Ub=________. 已知√(25-x^2)-√(15-x^2)=2,求√(25-x^2)+2√(15-x^2)的值 已知√(25+x^2)-√(15+x^2)=4 求√（25+x^2）+√（15+x^2) 的值 已知√(25-x*x)-√(15+x*x)=4,求√(25-x*x)+√(15+x*x)的值 已知（25-x＾2）＾1/2-（15-x＾2）＾1/2＝2,求（25-x＾2）＾1/2+（15-x＾2）＾1/2的值． 已知m^2+m-11=0.(1)m^2+m的值为__;(2)求m^3+12m^2-21的值 已知线段AB=7,回答下列问题：(2)当点C到AB两点的距离之和等于10cm时,点C一定在直线外,为什么? 已知关于x的方程x/(x-3) = 2- m/(3-x)有一个正数解，求m的取值范围。 已知线段AB=10,试探下列问题 （1)是否存在一点c,使它到AB两点的距离的和等于8cm?并说明理由（2）是否存在点C,使他到AB两点的距离的和等于10cm?若存在,他的位置唯一吗?（3）当点C到AB两点距离 已知(x^2-3x+m)(x-n)=x^3-2x+21,则m=(),n=() x²-5x+21=0 若x²+1/x²=23,求出x²+5x的值 鸡兔同笼,共22个头,46个脚.求鸡兔各多少只?用一元一次方程解. 左边三点水右边一个“区”怎么念