题目
(6.5-4.7)×2.75+0.9 简便运算.
提问时间:2020-10-17
答案
(6.5-4.7)×2.75+0.9
=1.8×2.75+0.9
=0.9×2×2.75+0.9
=0.9×(5.5+1)
=0.9×6.5
=6.5×(1-0.1)
=6.5-0.65
=5.85
=1.8×2.75+0.9
=0.9×2×2.75+0.9
=0.9×(5.5+1)
=0.9×6.5
=6.5×(1-0.1)
=6.5-0.65
=5.85
举一反三
已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
奥巴马演讲不用看稿子.为什么中国领导演讲要看?
想找英语初三上学期的首字母填空练习……
英语翻译
最新试题
- 1I enjoy sitting on the comfortable chairs and reading exciting storybooks with beautiful pictures.
- 2Must we go to see a doctor at once when we have the flu?Yes,we must.是什么
- 3是故聪与敏 下一句
- 4_____ — Our price is the lowest one in the city.
- 5某工地实施爆破,操作人员点燃导火线后,必须在炸药爆炸前跑到400m外安全区域,若导火线燃烧的速度为1.1cm/秒,人跑步的速度为5m/秒,则导火线的长xcm应满足的不等式是:_.
- 6f(X)=x^2-3x-4分之x^2-2X-3的值域和定义域?
- 7大象每天吃180千克食物,熊猫2天吃72千克食物.大象每天吃的食物是熊猫的多少倍?
- 8Most parents, I suppose, have had the experience of reading a bedtime story __ their children.
- 9《我改变了困难的色彩》作文怎么写?
- 10一题英语作业,
热门考点
- 1物体的温度降低,则( ) A.一定是物体放出了热量 B.一定是物体对外界做了功 C.物体的内能会减小 D.物体的内能会增加
- 2I have finished a large part of the book ,the rest of which ()more difficult . 为什么/
- 3How much is the pair of black trousers?同义句--- --- --- --- the pair of black trousers?
- 4一个零件,甲加工用了13分之10小时,乙加工用了10分之7小时,甲工作效率快
- 5选择 We______the test when the bell rang.
- 6CH4 + 2O2 ===点燃===CO2 + 2H2O的文字表达式
- 7这件夹克衫是红色的用英语怎么说?
- 8已知;如图EM,FN分别为△ABC中AB,AC的垂线平分线∠BAC=150求∠MAN的度数
- 9他踏上了回家的路!求翻译
- 10赶紧啊,十分钟