首页
登录
职称英语
If the average(arithmetic mean)of 7 consecutive numbers is 16, what is the sum o
If the average(arithmetic mean)of 7 consecutive numbers is 16, what is the sum o
游客
2025-02-24
11
管理
问题
If the average(arithmetic mean)of 7 consecutive numbers is 16, what is the sum of the least and greatest of the 7 integers?
选项
A、13
B、14
C、16
D、19
E、32
答案
E
解析
The correct answer is E. To solve this problem, first set the least of the seven values to x. When the least of the seven numbers is x, the remaining numbers are x+1, x+2, x+3, x+4, x+5, and x+6, because the numbers are consecutive. Because the average of the seven numbers is 16, then[x+(x+l)+(x+2)+(x+3)+(x+4)+(x+5)+(x+6)]divided by 7 = 16. Solve for x:
(7x + 21)/7= 16
7x+21 = 112
7x=91
x=13
The smallest number, x, is 13, and the largest number is x+6. Therefore the largest number is equal to 13+6, or 19, and the sum of these two numbers is 13 + 19, or 32.
转载请注明原文地址:https://tihaiku.com/zcyy/3970635.html
相关试题推荐
Iftheaverage(arithmeticmean)of7consecutivenumbersis16,whatisthesumo
Theaverageofasetofsixintegersis3Whenaseventhnumberisincludedinth
Iftheaverage(arithmeticmean)oftwonumbersis16andoneofthenumbersisx,
Theaverageofxandyis16andtheaverageofx,y,andzis2Whatisthevalu
ThelargeroftwonumbersexceedsthreetimesthesmallernumberbyThesumoft
Whentheaverageofalistofcoursegradesismultipliedbythenumberofcours
Alistofnumbershasameanof8andastandarddeviationof2.Ifxisanumber
Ifthefunctiongisdefinedforallnonzeronumbersybyg(y)=[img]2014m9x/ct_e
Thesequenceofnumbersa1,a2,a3,...,an,...isdefinedby[img]2014m9x/ct_egreqj_
In1993theaverage(arithmeticmean)pricepercardforallgreetingcardssoldw
随机试题
Thegloveswerereallytoosmall,anditwasonlyby______themthatIcangetth
WhenMelissaMahanandherhusbandvisitedtheNetherlands,theyfeltimpris
Oneofthequestionscomingintofocusaswefacegrowingscarcityofresour
Duringthetwentiethcentury,theUnitedStatesparticipatedintwomajorwa
GeneticallyModifiedFoods—FeedtheWorld?A)Ifyouwanttospa
玻璃钢是()。A.玻璃纤维增强Al基复合材料 B.玻璃纤维增强塑料 C.碳
强心甙对房颤的治疗作用下列正确的是()A.消除房颤,转变为窦性节律 B.减
生姜能减轻或清除生半夏的毒性,这种配伍关系称为A.相须 B.相使 C.相杀
对关于正中关系的描述正确的是()A.又称正中 B.亦称正中关系 C.亦称牙尖
月经周期规则,末次月经2010年1月28日,预产期应是A.2010年11月1日
最新回复
(
0
)