1200匝
最新问答: 篮子里有煮蛋,茶叶蛋和皮蛋共30个,价值24元钱,已知煮蛋每个0.60元钱,茶叶蛋每个1元钱,皮蛋每个1.20. 马路两旁种树(两头都种)每隔3米种1棵,到头剩3棵;每隔2.5米种一棵,到头缺77棵,球路长和树的棵树? Everything is going to be alright,maybe not today but eventu 高中综合数列问题1.设数列{cn}n对任意n∈N*,都有c1/2+c2/2^2+.+cn/2^n=n+1求c1+c2+. 英语翻译人,要想了解别人,也许很容易;但是要想真正的了解自己,却是很难.为了能够更好的了解自己,分析自己,定位自己.用S 已知x-3y=0 求分式x^2+y^2分之x^2-3xy+y^2的值 给一篇有关除夕之夜的作文 如图为细胞模式图,请据图回答:(1)请写出各部分的名称:[1]______[2]______[3]______[4]__ Our main markets are in Europe,with buyers superior in mail y分之x=3,求x的二次方-xy+y的二次方分之x的二次方+2xy-3y的二次方 纟旁的字大义和什么有关 what sport do you like ,peter?i like volleyball .i think it AB是圆O的直径,点C在AB的延长线上,CD与圆O相切于点D If you do not leave me.-I will by your side until the life e 英语书信范文Suppose you are going to attend a meeting in guangshou 如何记得住英文单词 q求这道高一的集合题目解法 碘的饱和水溶液怎么配制? {bn}为等差数列,bn=(2n^2-n)/(n+c),求非0常数c 抛物线y=-x2-2x+m,若其顶点在x轴上,则m=______.