首页
登录
职称英语
[img]ct_2image034[/img]In the equation above, k, r, s, t, and v represent posit
[img]ct_2image034[/img]In the equation above, k, r, s, t, and v represent posit
游客
2024-01-12
19
管理
问题
In the equation above, k, r, s, t, and v represent positive numbers. Multiplying which one of these numbers by 2 will reduce the value of n to 1/2 of its present value ?
选项
A、k
B、r
C、s
D、t
E、v
答案
D
解析
在左面方程中,k,r,s,t和v都是正数(positive number),其中哪个数乘以2将使n值减少到某前值的1/2?
解:本题的正确答案为(D)。n是一个分式,要使一个分式的值减小一半,要么使分式的分子的值减小一半,要么使分式的分母的值增加一倍。本题所给出的繁分式的分母为上,因此只有把t的值增加一倍,才能使n的值减小一半。
转载请注明原文地址:https://tihaiku.com/zcyy/3356640.html
相关试题推荐
Lastyear,supportforthesocialandbehavioralsciencesrepresentedonlyabout
Recentlyimplemented"shift-workequations"basedonstudiesofthehumansleep
Theproposedurbandevelopmentzonesdonotrepresentanewprinciple:itwasem
In1973mortgagepaymentsrepresentedtwenty-onepercentofanaveragethirty-ye
ArepresentativeoftheWomen’sBureauoftheUnitedStatesDepartmentofLabor
Forallrealnumbersv,theoperationv*isdefinedbytheequationv*=v-(v/3)
(x-4)and(2x+3)arethesolutionsetsforwhatequation?Thesolutionsetsare
Whatistheequationofalineperpendicularto3x=2-ywiththey-intercept8?
Whatistheequationofalineparalleltoy=4x-12thatcrossesthey-axisat3?
4x-y=633y+x=6Lineuptheliketermsinbothequations:4x-y=63x+3
随机试题
[originaltext]M:So,Susan,doyouhaveanythingplannedforthisSaturday?W:
Thegrandmotherdidn’twanttogotoFlorida.Shewantedtovisitsomeofhe
ShoppersonBlackFriday,thetraditionalstartoftheholidayshoppingseas
正常情况下,未避孕夫妇在1年内妊娠者占:()A.50% B.60%
对学习内容或学习结果感兴趣而形成的动机,可称为()。A.近景的直接性动机
牡丹皮药材的形状多是A.板片状B.单卷状C.筒状D.双卷筒状E.反曲状
与膀胱癌关系密切的是A.3,4-苯并芘 B.黄曲霉毒素 C.石棉纤维 D
我国外汇汇率采用的是( )。A.美元标价法 B.人民币标价法 C.间接标价
女,66岁,慢性支气管炎并阻塞性肺气肿病史20余年.3天前咳嗽、咳痰加重,血气分
(2021年第1批真题)根据项目成本管理任务,成本考核前需要完成的工作有()。
最新回复
(
0
)