Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing

This Question is Closed

saifoo.khan Group TitleBest ResponseYou've already chosen the best response.2
\[mean = \frac{\sum fx}{\sum x}\]
 one year ago

wio Group TitleBest ResponseYou've already chosen the best response.0
ah, so it's just a weighted average.
 one year ago

kropot72 Group TitleBest ResponseYou've already chosen the best response.0
Solve the following for x: \[\frac{12(x5)+40x+8(x+5)}{60}=10\]
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
Whatt is the general formula @kropot72
 one year ago

ParthKohli Group TitleBest ResponseYou've already chosen the best response.2
\[\dfrac{\underbrace{x  5 + x  5 \cdots+ x5}_{\rm 12 ~times} + \underbrace{x + x\cdots x + x}_{\rm 40 ~ times} + \underbrace{x + 5 +\cdots+ x+5}_{\rm 8 ~times}}{12 + 40 + 8}\]
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
Thanks a lot but there would be some general form of this :/
 one year ago

saifoo.khan Group TitleBest ResponseYou've already chosen the best response.2
I wrote the general formula already.
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
Shouldnt it be, \[\sum_{}^{}fx/\sum_{}^{}f\]
 one year ago

saifoo.khan Group TitleBest ResponseYou've already chosen the best response.2
\[Arithmetic => \frac{x+y}{2} = 10.2\]
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
What about geometric?
 one year ago

saifoo.khan Group TitleBest ResponseYou've already chosen the best response.2
Geo mean formula: √(xy)
 one year ago

saifoo.khan Group TitleBest ResponseYou've already chosen the best response.2
\[√(xy) = 8.4\]
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
Do i have to solve quad equations?
 one year ago

saifoo.khan Group TitleBest ResponseYou've already chosen the best response.2
take square on both sides: xy = sqrt8.4 x = sqrt(8.4)/y
 one year ago

saifoo.khan Group TitleBest ResponseYou've already chosen the best response.2
Now substitute this in the first equation
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
But it would be x=70.56/y
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
sqrt(xy)=8.4 xy=70.56 x=70.56/y
 one year ago

saifoo.khan Group TitleBest ResponseYou've already chosen the best response.2
Oh right.
 one year ago

saifoo.khan Group TitleBest ResponseYou've already chosen the best response.2
Actually i'm doing two things at once. XD
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
No worries c:,This thing is going into a quad equation :(
 one year ago

saifoo.khan Group TitleBest ResponseYou've already chosen the best response.2
Go for it
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
x=77.16,56.76 and y=77.16,56.76
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
I feel like i have made a mistake :/
 one year ago

saifoo.khan Group TitleBest ResponseYou've already chosen the best response.2
Let me check.
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
Should i do it again?
 one year ago

saifoo.khan Group TitleBest ResponseYou've already chosen the best response.2
x = 4.41, y = 15.99 x = 15.99, y = 4.41
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
Lemme do it again,Stop playing with wolf :/
 one year ago

mathslover Group TitleBest ResponseYou've already chosen the best response.0
may i help?
 one year ago

mathslover Group TitleBest ResponseYou've already chosen the best response.0
ok do post your answer here
 one year ago

mathslover Group TitleBest ResponseYou've already chosen the best response.0
if you're completed with your soln
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
Okay x=15.98,4.414 and y=4.414,15.98
 one year ago

saifoo.khan Group TitleBest ResponseYou've already chosen the best response.2
great.
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
Now next question, I am getting b=2,b=8 and a=8,a=2
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
So harmonic mean is 16/5=3.2
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
Right @saifoo.khan ?
 one year ago

saifoo.khan Group TitleBest ResponseYou've already chosen the best response.2
Never heard of harmonic mean. :s
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
Okay lets call someone else for that case,What about the observation do you think they are right? Btw,A.M is opposite of H.M.
 one year ago

mathslover Group TitleBest ResponseYou've already chosen the best response.0
I cn help in HM
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
And, H.M=N/(1/a1+1/a2+......1/an)
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
@mathslover Do you think my answers are correct?
 one year ago

mathslover Group TitleBest ResponseYou've already chosen the best response.0
lemme check tht .. wait
 one year ago

mathslover Group TitleBest ResponseYou've already chosen the best response.0
yep u r right
 one year ago

mathslover Group TitleBest ResponseYou've already chosen the best response.0
great work
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
Thanks but now i want to ask, As i have two diff observations a=8,b=2 and a=2,b=8 and the HM is same so should i show this two times?
 one year ago

mathslover Group TitleBest ResponseYou've already chosen the best response.0
yes you have to mention that it will be same in both cases
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
Okay now next question.
 one year ago

saifoo.khan Group TitleBest ResponseYou've already chosen the best response.2
Namaz parhlo.
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
Chalo okay namaz kai baad krtai hai.
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
Han continue karlain @saifoo.khan
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
@AravindG Can you help?
 one year ago

AravindG Group TitleBest ResponseYou've already chosen the best response.0
sorry I am a really busy ...
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
I am really busy*
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
@saifoo.khan I am waiting :/
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
@hartnn Help pleaseeeeeeeeeeeeee
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
@hartnn See the last attachment
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.0
same weighted average formula.
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.0
(700*8.5+800*7.5+500*8)/2000
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.0
\(\sum_{}^{}fx/\sum_{}^{}f\)
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
I was thinking about using this but i am not getting why is sum of f=2000
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.0
sum of f = 700+800+500
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
Okay thanks :)
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
I am getting mean=7.85,Am i right? @mathslover
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
Close enough lol :P I am using a casio scientific calculator,I dont know why it rounded the answers :/
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
Oh yeah i checked it again,Its 7.95 thanks. I have another question may i ask? @hartnn
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
Okay here we go :D
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.0
you tried ?
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
Wait wait dont answer i am trying
 one year ago

hba Group TitleBest ResponseYou've already chosen the best response.1
\[\sum_{i=1}^{n}a_i=16.2\] Okay @hartnn Please explain
 one year ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.