(1)解方程:10x+2=30x+7;(2)先化简,再求值:x2-2xx+1•( 发布时间:2017-05-23 23:37 │ 来源:www.tikuol.com 题型:解答题 问题: (1)解方程:10x+2=30x+7;(2)先化简,再求值:x2-2xx+1•(1+1x),其中x=-2.
题型:解答题 某地区有一条长100千米,宽0.5千米的防护林.有关部门为统计该防护林的树林量,从中选出5块防护林(每块长1千米,宽0.5千米)进行统计,每块防护林的树木数量如下(单位:颗):65 100,63 200,64 600,64 700,67 400.那么根据以上的数据估算这一防护林总共约有______棵树. 查看答案
题型:解答题 McGill Comedy ClubImportant meeting today. Discussions on putting on Blazing Saddles. Union room 302, 3-4 pm. New members (both actors and nonactors, living and dead) are welcome.History Students' AssociationProf. Michael Cross of Dalhousie University will be speaking on “Unskilled Labours on Rivers and Canals in Upper Canada, 1820-1850: The Beginnings of Class Struggle,"at 10 am in Leacock 230.Design Mirror SaleAll types and sizes of design mirrors priced to please. Sale today in Union room 108.McGill Teaching Assistants' AssociationA general meeting, for all the TAs, will be held at 4 pm in Leacock 116.Women's UnionImportant. General Meeting at 6 pm, Union room 423. Speaker on “Importance of deciding basic goals of the Women's Union".Everyone, old, new and those interested, please attend.Film SocietyLast meeting of the term for all members.All managers are required to be present. 6:00 sharp, Union room 434.Canadian University Students OverseasCUSO presents “Guess Who's Coming to Breakfast" at 7 pm. Newman Centre, 3484 Peel. Find out about CUSO here and overseas. Everyone welcome.1.Where can you probably find this text?A. In a school magazine. B. In a national paper.C. In a guide book. D. In a university daily newspaper. 2.If you are interested in arts, where would you go for a visit?A. Leacock 116. B. Union room 423.C. Union room 108. D. Newman Centre, 3484 Peel. 3.Which of the following is the name of a play?A. Blazing Saddles.B. Guess Who's Coming to Breakfast.C. Importance of deciding basic goals of the Women's Union.D. Unskilled Labours on Rivers and Canals in Upper Canada, 1820-1850. 查看答案
题型:解答题 某房地产公司要投资一个项目,进行初步测算后,可以预计该项目将分成四年进行运作,其中:第一、第二年是建设期,每年初分别投入300万元、500万元的资金;第三年初继续投入200万元,但年未有400万元的收益;第四年不用再投资,但年末收益可以达到 1000万元。假设该段时间的基准收益率为10%,则:该项目的内部收益率为( )。A.12%B.13%C.12.62%D.12.26% 查看答案