首页
登录
职称英语
A man jogs at 6 mph over a certain distance and walks hack over the same route a
A man jogs at 6 mph over a certain distance and walks hack over the same route a
游客
2024-08-10
24
管理
问题
A man jogs at 6 mph over a certain distance and walks hack over the same route at 4 mph. What is his average speed for the journey?
选项
答案
4.8mph
解析
(mph英里/小时。设单程距离为x,平均速度=总距离/总时间=2x/(x/6+x/4)=4.8。)
转载请注明原文地址:https://tihaiku.com/zcyy/3714033.html
相关试题推荐
Ourlawstatesthatallmenareequalandendowedwithcertain______rights,amon
—Wouldyoupassmethemilk,please?—Certainly,sir.______.—Whataboutchocola
Thisdiagramhasbeendrawninkeepingwithacertainlogic.Canyouworkoutwh
Itiscertainthatnofoodisasgoodas______earnedbyone’sownlabor,wheth
AcertainmonthhasfiveWednesdaysandthethirdSaturdayisthe18th.Whatis
Inmanycountriesthereisafixedchargeforpersonalservices.Acertainp
Inmanycountriesthereisafixedchargeforpersonalservices.Acertainp
Inmanycountriesthereisafixedchargeforpersonalservices.Acertainp
Inmanycountriesthereisafixedchargeforpersonalservices.Acertainp
Theprocessby【46】______ofwhichhumanbeingsarbitrarilymakecertainthing
随机试题
[originaltext]M:HeySusan,whatareyoucomingasthisyear?W:Comingas?M:
Backintheday,agoodreportcardearnedyouaparentalpatontheback,b
决策的科学化、民主化是实行民主集中制的重要环节,是社会主义民主政治建设的重要任务
正常女性脾脏厚径超声测值是A.
战略管理包含3个层次,( )不属于战略管理的层次。A.目标层 B.规划层
患者女,46岁。婚后未生育,素有经前期乳房胀痛,发现右乳肿物3周,乳房肿块坚硬,
职位分析需要收集和整理的信息中,属于建设项目管理的内部和外部的环境信息的有()
《土建设施运维细则》规定,新建、改建和扩建的建筑物必须达到()要求。抗震$;
案例五: 一般资料:求助者,男性,21岁,高中学历,一年前来城市打工。 下面
下述不符合急性造血停滞特点的是A.均发生于无血液病的患者 B.突然全血细胞减少
最新回复
(
0
)