成都市招生考试网

1.Who invented the aeroplane?When were they born?中文及其回答? 若cos(pai+阿法)=-2分之1,则sin(2分之pai+阿法) 如图,已知反比例函数y=k\x与一次函数y=x+b的图像在第一象限交于点A(1,-K+4).（1）试确定这两个函数的表达式.（2）求出这个函数图像的另一个交点B的坐标,并根据图像写出使反比例函数的值大 已知反比例函数y=x/k与一次函数y=x+b的图像在第一象限内相交于点A（1,-k+4）（1）：求这两个的解析式（要过程）（2）：这两个函数图象的另一个交点B到x轴的距离为1,求点B坐标,并求反比例函 已知减数是被减数的11/20,减数比差少8,减数是多少 被减数、减数和差的和是34,已知差是8.99,减数是多少?请大家帮忙看看怎么给孩子讲最能让他听得懂啊? 解不等式,若关于x的不等式(a+1)x>2a-1在区间[-2,1]上恒成立,求实数a的取值范围 设不等式|x+2| 数学函数f(tanx)=tan2x 求(f2) 若f(tanx)=tan2x 则f(2)=? 若cos(θ-pai/4)=a,求sin(θ+pai/4) sin(pai/4-a)=5/13 0 在平面直角坐标系xoy中,设点P为圆C(x-1)^2+y^2=4上的任意一点,点Q(2a,a-3)(a属于R)求线段PQ的最小值 cos^4( pai/8)-sin^4( pai/8) f x =sin(pai*x/4-pai/6)-2(cos pai*x/8)^2+1 they were very naughty at school改为否定句 They were all wet when they arrived at school.:Were they?Did they? 已知M(x,y)为平面区域x+y-2≥0 x-y+2≥0 x≤2内的动点,求(y-1)/(x+2)的最大、最小值 不等式组x-y+5≥0,x+y≥0,x≤3表示的平面区域是什么形状?若u=(x+2)^2+(y+1)^2,求上述条件下u的最小值. 一道初一数学题,谁会做啊?教教我吧(声明：“^2”表示平方,“^2003”表示2003次方,以此类推）已知C为负整数,且a、b、c满足（a-2）^2+|2b+4|=1+c,则（a+b）+^2003+a^2004+b^2005+c^2006=_.sorry,打错了，题目 where were they invented?的回答 已知关于x的不等式(x^2-2x-24)[x^2-(2a+6)x+(a^2+6a)] 小船的静水速度是27千米每小时,顺流航行60千米逆流返回如果水速不变,返程所用时间比顺流多用20%,求水流速度（一元一次方程） when was the ...invented? who were they invented by? what ane they used for?造一对话.如上 Who invented the aeroport?when were they born? 按When/born?when were you born?的形式来写下面的题目When/start school?What school/go to when you were seven?What house/live in?ride a bicycleto school when you were 11?Where/go/on holiday?What friends/play with?What games/playWhat/watch/on When were they invented and who invented them?具体看问题.For example :The abacus was invented in the six century by the Chinese.按照这个例句写umbrella binoculars camera bicyle~ 13.连续5个奇数的和是95,其中最大的是 ,最小的是 . 减数相当于被减数的5分之3,差和减数的比是 被减数、减数、差的和是192,减数相当于差的5分之3,差是（ ）,减数是（ ）. =LEFT(U2,4)&"-"&MID(U2,5,2)&"-"&RIGHT(U2,2) 帮我讲讲静水速度,还有顺流时间,逆流时间等的意思与计算方法 我一直不理解最好让我明白,讲的易懂,你们讲的还是不懂,要有每个的计算方法呢