您的位置: 首页 > 作业答案 > 数学 > 2012×2999-2011×3000=?

2012×2999-2011×3000=?

分类: 作业答案 • 2022-01-09 18:03:51

问题描述：

答

2012×2999-2011×3000
=2012×（3000-1）-2011×3000
=2012×3000-2012-2011×3000
=3000×（2012-2011）-2012
=3000×1-2012
=3000-2012
=988

已知关于x,y的方程组x+y=2012,4x-2y=3m+2015,的解能使等式x+y=2011成立,求m的值已知关于x,y的方程组x+y=2012,4x-2y=3m+2015,的解能使等式x-y=2011成立,求m的值不好意思，打错了
2012广东高考英语语法填空答案疑问17题为什么是would buy而不是had bought；；22题为什么是which而不是who；；24题为什么是if/whether而不是what原文和我做的答案：Mary will ever forget the firsttime she saw him.He suddenly appeared in class one day ,__16wearing_(wear) sun glasses .He walked in as if he __17would buy（had bought?）___(buy) the school,And the word quickly got around that he was from New York City.For some reason he sat besideMary.Mary felt _____18pleased_ (please),because there were many empty seat
（2012•奉贤区二模）图中，甲图为某哺乳动物体细胞中部分染色体及其上的基因示意图，乙、丙、丁图为该动物处于不同分裂时期的染色体示意图.下列叙述正确的是（　　）A. 判断该动物是否为纯合子应选用另一雌性动物与其测交B. 乙细胞和丙细胞分裂时均可以发生基因重组C. 甲细胞产生的基因突变可通过卵细胞传递给子代D. 丁产生的子细胞中的基因组成是aB和aB
2012年7月27日,第三十届夏季奥运会在英国伦敦召开,回答1-2题1.奥运会期间,贝贝打算观看比赛的同时,游览一下伦敦的风土人情,贝贝携带的地图最适合的是A.世界政区图 B.英国政区 C.伦敦交通旅游图2.经过伦敦的经纬线是下列哪一条?A.国际日期变更期 B.北回归线 C.本初子午线 D.赤道
广东省2012英语试卷的语法填空第20空应该填什么?Mary will ever forget the first time she saw him .He suddenly appeared in class one day ,__16_(wear) sun glasses .He walked in as if he __17___(buy) the school ,And the word quickly got around that he was from New Youk City .For some reason he sat beside Mary.Mary felt _____18_(please ),because there were many empty seats in the room .But she quickly realized that it wasn’t her ,it was probably the fact that she sat in __19__
在2桶一样的水中加热,一桶水中有6根500W的电热丝均匀的分布在水中,一桶是1根3000W的在水中,那个加热快?
2012年植树节,向阳中学七年级一班的同学去义务劳动,去甲处劳动的有30人,去乙处劳动的有24人,从乙处调一部分人到家处,使甲处人数是乙出人数的2倍,若设应从乙处调x人到甲处,则所列方程是________
两道2012辽宁高考英语单选题,求答疑33.Jack is a great talker.It's high time that he_______ something instead of just talking..It's high time that 啥意思?A.will do B.has done C do Ddid（答案D,我选A）35.Mum,I was wondering if you could lend me a few dollars until I __________ on Friday.A.get paid B.got paid C have paid D had been paid（答案是A,我选B）get ,have 搭配词组有啥区别?最好每个选项都能解释下~
我要2012年8月以后的天文奇观.请列举时间及天象带奇观的简介.犹如你在这里的回答一样吧
对实习单位的意见我是在小学教英语,请问对实习单位的发展意见怎么写,3000字
都说中国长城是万里的,我想知道它究竟有多长?
谁还知道关于寓言方面的知识

2012×2999-2011×3000=?

相关推荐