关键时刻之中国

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关键时刻之中国
-0.1x方+2.6x>0 求x范围.谁能帮我解决一下 y=-0.1x²+2.6x+43(0 lim(2x+3/2x+1)的x+1次方在X趋向无穷大的时候值是多少,要计算过程谢谢你们的回答,虽然你们的答案不对,但先在我会做了。 在平面直角坐标系xoy中,已知反比例函数y=-3m/x和一次函数y=kx-1的图像都经过点P,且一次函数的图像与x轴且一次函数的图像与x轴交于点P1求这个反比例函数和一次函数的解析式三角形POP1的面积 在平面直角坐标系x0y中,已知反比例函数y=x/-3m和一次函数y=kx-1的图象都经过点Pp(1,-3),且一次函数的图像与x轴交于点P'.求:(1),这个反比例函数和一次函数的解析式;(2),三角形POP'的面积要 方程0.6X=8.4需要解方程过程和检验过程 5.6x-3.8=1.8这道方程应该如何检验? 和6x+3×1.2=9.6相似的解方程 用x=-2检验方程:9-2(x+3)=x-(3+6x) 在平面直角坐标系xOy中,反比例函数y==x/3的图像与一次函数y=kx的图像的一个交点为A(m.-3).、若点p在直线oa上,且满足pa=2oa,写出点p的坐标(要详细过程和解释) 按要求改写下列句子:1.I can sing English songs .(改为一般疑问句并改否定回答)( ) you( ) English songs No ,I ( ) .2.Lucy can speak Chinese .(用English改为选择疑问句)( ) Lucy( ) Chinese( )( ) 3. li ming can sing an English song?(改为否定句) li ming ( ) ( )an Englishsong 改为一般疑问句: 1.They can sing English songs.2.His birthday is on the twentieth of November.3.Lucy and Amy are learning to skate.4.It is diffic ult for giant pandas to survive in the wild.5.I believe what he said is true.6.I must stay at ho We can sing English songs(改一般疑问句) Can you sing an English song?是一般疑问句还是特殊疑问句就是情态动词在句首的 一道英语题嗷嗷嗷1、jackcontinued___(write) his letter after he answered his uncle's telephone call.2、I___ ___ ___(听到她正在唱歌) in the room at this time yesterday evening.3、You can tell him the news__ __ __(以发电子邮 求习题英语答案啊 嗷嗷嗷~句型转换 1.It is blowing hard today.(改为同义句) It is very ________ today.2.There was much fog this morning.(改为同义句) It was quite ________ this morning.3.There is more rain this year than last yea Sam met Mary in England and visited her school.为什么用met,不用had met?两个过去的动作为什么不用过去完成时啊? 若关于x的方程x^2+ax+a^2-1=0有一正根和一负根,侧a的取值范围 Mike often runs in the norning(改为一般疑问句) Peter often helps in the house at the weekend 改为一般疑问句 ( )Peter often ( )in the house at We often read books in the library .变成一般疑问句,否定回答 I often cIimb mountains with Mike on the weekend改成一般疑问句 Peter read a book about living in the future.(改为一般疑问句)I don't think he can play the violin well.(改为反意疑问句)I spent five yuan buying the school .(同义句转换)John is too young to go to school .(同义句转换)He' 单项式3m的x次方n的2次方与负二分之一m4次方与负二分之一m的4次方n的y减一次方的和是单项式x等几,y等几 已知方程│x│=ax+1有一个负根而且没有正根,求a的取值范围. 已知关于x的方程|x|=ax+1 有一个负根,而且没有正根,求a的取值范围如题 8、方程 |x|=ax+1有一负根而无正根, 则a的取值范围…………( )A. a>-1 B. a>1 C. a≥-1 D. a≥1 嗷嗷嗷a cf体验服1.2.6gta密码是啥啊 嗷嗷嗷嗷嗷嗷嗷嗷嗷嗷啊 对的给100分 小球由地面竖直上抛,上升的最大高度为H,设所受阻力大小恒定,地面为零势能面.在上升至离地高度h处,小球的动能是势能的2倍,在下落至离高度h处,小球的势能是动能的2倍,则h等于A.H/9 B.2H/9 C.3H x分之2分之1x等于多少 如果2分之1x等于5分之2y,那么y比x等于【 】