amillionyearsago
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(6分之5-4分之3)÷12分之5+5分之9 简便计算
请问.Let's not waste our time. 中文怎么翻译呀
Let's not waste our time.这里waste可不可以作动词,前面不要be
let us do not waste time 和 let us not waste time 的区别
Let’s put the matter to the vote and not waste our time arguing about it,A.shall we B.can we C.may I D.will you
英语翻译
Our teacher is vevy s().She makes me tired.
设函数f(X)=lnx-1/2ax^2-bx F(x)=f(x)+1/2ax^2+bx+a/x (0<x≤3) 以其图像上任意一点P(x0,y0)为切点的的斜率k≤1/2恒成立,求实数a的取值范围
Waste paper shouldn't ____ enerywhere.It's our duty to keep our city clean.A.be thrown B.thronw C.is thrown D.are thrown
It's on duty to keep our classroom clean 改为同义句_______ ________ our classroom clean is our duty.
已知连续型随机变量X服从区间[a,b]上的均匀分布,则概率P {X
句子改错 Our English teacher is a little funnier than their句子是社么意思?
our history teacher is a veryserious mane is nice but he never smiles
已知:关于x的一元二次方程mx²-(3m+2)x+2m+2=0(m>0)(1)求证:方程有两个不相等的实数根(2)设方程的两个实数根分别为x1x2(其中x1<x2),若y是关于m的函数,且y=x2-2x1,求这个函数解析式
在三角形ABC中,向量AB=a,BC=b,CA=c,若a.b=b.c,则三角形形状为?(为什么是钝角?)
△ABC中,若向量AB*向量BC>0,可以确认△ABC是钝角三角形吗?为什么
在△ABC中,若向量AB×向量BC
在△ABC中 为什么 “向量AB乘以向量BC>0,△ABC就是钝角三角形”
Don't throw l___ everywhere.Please keep our city clean.《全品学练考》中P67
our teacher is very strict and I'm very tired()class
向量AB*BC>0 ABC为钝角三角形的什么条件?答案是充分不必要 BA*BC<0 接下来思路是什么?
our Chinese teacher often make us very tired修改病句
三角形ABC中,为什么 向量AC乘向量AB<0,则角A为钝角.
解不等式 |x2-5x+6|<x2-4谢谢了,
13..15题选几
x2-5x+6
解不等式x2-5x-6
不等式|x2-5x+6|
不等式1/x2+5x+6
keep our classroom clean.don't make it_________.
△ABC的三边BC,CA,AB的长分别为a,b,c,这三边的高一次为ha,hb.hc,若a≤ha,b≤hb,则这个三角形是什么三角形?A:等边三角形B:等腰直角三角形C:直角非等腰三角形D:等腰非直角三角形
设三角形ABC的三边AB=c,BC=a,CA=b,他们对应的高分别为 hc:ha:hb,且a:b:c=2:3:4,求ha,hb,hc.