Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
PLEASE HELP!!! IT'S 3 AM HERE AND I NEED THIS HOMEWORK EXPLAINED!!!
OpenStudy user s.k has 343 fans less than a64. If s.k gets 3 fans a week while a64 gets 2 fans a week, how long will it take s.k to get twice the fans a64 has?
 one year ago
 one year ago
PLEASE HELP!!! IT'S 3 AM HERE AND I NEED THIS HOMEWORK EXPLAINED!!! OpenStudy user s.k has 343 fans less than a64. If s.k gets 3 fans a week while a64 gets 2 fans a week, how long will it take s.k to get twice the fans a64 has?
 one year ago
 one year ago

This Question is Closed

saifoo.khanBest ResponseYou've already chosen the best response.0
LOL. nice thought.
 one year ago

saifoo.khanBest ResponseYou've already chosen the best response.0
s.k. fans = x a64 fans = y y = 343 + x i get till here..
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
im thinking y + 2a = x + 3a?
 one year ago

Akshay_BudhkarBest ResponseYou've already chosen the best response.2
After z weeks the number of fans of s.k= x+3z and a64= y+2z
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
no wait..that's for them to equal..
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
if s.k. will double then 2(y + 2z) = x + 3z?
 one year ago

Akshay_BudhkarBest ResponseYou've already chosen the best response.2
now we want them to be twice, so we want x+3z=2(y+2z)
 one year ago

ganeshie8Best ResponseYou've already chosen the best response.0
y1 = 3/7 x y2 = 2/7 x + 343
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
x + 3z = 2y + 4z x  2y = z what does that mean?
 one year ago

ganeshie8Best ResponseYou've already chosen the best response.0
y1 = 3/7 x y2 = 2/7 x + 343 y1 = 2y2 solve for x
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
how did you get those @ganeshie8 ?
 one year ago

ganeshie8Best ResponseYou've already chosen the best response.0
y1: number of fans of sk y2 : number of fans of a64 y1 is increasing his fans at a rate of 3 per 7 days right so slope of y1 is 3/7 put y1 equation in slope intercept form
 one year ago

Akshay_BudhkarBest ResponseYou've already chosen the best response.2
yea agreed^ why did i introduce a new variable O_O?
 one year ago

ganeshie8Best ResponseYou've already chosen the best response.0
to start with, a64 has 343 as y intercept.. hope you get the idea..
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
3/7 x = 2(2/7x +343) 3/7 x  4/7 x = 868 1/7 x = 868??? this seems weird
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
but still negative so weird o.O
 one year ago

saifoo.khanBest ResponseYou've already chosen the best response.0
So sk should start asking people to unfan him? :O
 one year ago

saifoo.khanBest ResponseYou've already chosen the best response.0
Sounds like a plan. NOT.
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
s.k should put up a teenage asian girl...
 one year ago

saifoo.khanBest ResponseYou've already chosen the best response.0
Ok, this sounds like a better plan. :D
 one year ago

saifoo.khanBest ResponseYou've already chosen the best response.0
what is this guy typing from a hour?
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
even with values im getting negative lol
 one year ago

ganeshie8Best ResponseYou've already chosen the best response.0
me.. ? im not typing anythign... just watching hindi movie i thoutht lgba got the answer... ?
 one year ago

saifoo.khanBest ResponseYou've already chosen the best response.0
No, i was talking about lgba.
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
no i didnt get the answer..im getting negatives
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
the time when they equal is just easy...could it be that it's impossible for s.k to get double the fans of a64?? o.O
 one year ago

ganeshie8Best ResponseYou've already chosen the best response.0
yeah that can happen in reality... but equations.. we should get +ve numb er of days
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
let's try solving for equal first... x + 3z = y + 2z z = y  x <this is the time when they become equal
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
assuming they are already equal let a be their values a + 3n = 2(a + 2n) a + 3n = 2a + 4n a  2a = n <the time when they double
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
so if z + n = a + a = 0??? o.O
 one year ago

Akshay_BudhkarBest ResponseYou've already chosen the best response.2
equal? u want it twice..
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
wth am i doing wrong =_=
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
well it didnt work lol..i just tried
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
why am i getting negative @Akshay_Budhkar ? any ideas>
 one year ago

Akshay_BudhkarBest ResponseYou've already chosen the best response.2
i am working on it gimme a moment
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
ugh i gtg...will be back in an hour... if any one of you got some ideas pls feel free to post it here
 one year ago

ganeshie8Best ResponseYou've already chosen the best response.0
ok me too confused..
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
i dont think i did anything wrong in the solution :/
 one year ago

Akshay_BudhkarBest ResponseYou've already chosen the best response.2
are we missing an equation??
 one year ago

Akshay_BudhkarBest ResponseYou've already chosen the best response.2
yea we need another equation, the answer will depend on the initial values of a and b!! try taking two diff sets of the numbers and solving
 one year ago

abstractedBest ResponseYou've already chosen the best response.0
I don't think you can solve this until you have another equation. We have 3 variables (a= s.k fans, b=a64 fans, and w=weeks) but only two equations, so it is unsolvable. right?
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
well x and y dont really matter. as long as you get a numerical value...but let's say s.k has 914 fans and a64 was 1257..it still becomes negative
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
@ganeshie8 still nothing? even if there are values?
 one year ago

ganeshie8Best ResponseYou've already chosen the best response.0
343 + 3t = 2{ 2t} => t = 343 weeks in 343 weeks sk fans will become twice that of a64. i am still lost in straight lines.. i want to see you or someone else explain the answer @lgbasallote @shubhamsrg @abstracted @Akshay_Budhkar
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
how did you get 343 again?
 one year ago

blockcolderBest ResponseYou've already chosen the best response.0
You can just say that every week, s.k's lead will be reduced by one so that after 343 weeks, s.k's lead will be zero.
 one year ago

Akshay_BudhkarBest ResponseYou've already chosen the best response.2
@ganeshie8 the straight line stuff wont work, the intercept is wrong, you dont know the intercept. @lgba the question is incomplete...
 one year ago

saifoo.khanBest ResponseYou've already chosen the best response.0
@lgbasallote , come up with the complete question next time! _ i want to find a way out.
 one year ago

ganeshie8Best ResponseYou've already chosen the best response.0
@Akshay_Budhkar ,straight line logic may not tell the answer straight away.. but it works. @saifoo.khan , the question @lgbasallote posted is complete. answer is : sk can never achieve his goal. because with a 3t rate he can never reach 2(2t) value !! 3t < 2 (2t + 343) 3t < 4t + ....
 one year ago

Akshay_BudhkarBest ResponseYou've already chosen the best response.2
@ganeshie8 it is pretty illogical... he can achieve his goal!! He is going at a faster rate man
 one year ago

Akshay_BudhkarBest ResponseYou've already chosen the best response.2
lol take real life example of 0 fans and 343 fans and solve, it works
 one year ago

ganeshie8Best ResponseYou've already chosen the best response.0
for positive values of t, 3t <= 2(2t + 300 ) u agree... ?
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
but how could it not be possible?? o.O i mean soon s.k is gonna overtake a64 then after that s.k will always be leading there should be a time when s.k will get twice :O
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
let's say both of them start at 0... 1st week  s.k is 3... a64 is 2 2nd week  6  4 3rd week  9  6 4th week  12  8 5th week  15  10 6th week  18 12 see how s.k's lead is gettingbigger...that should double sometime
 one year ago

LimitlessBest ResponseYou've already chosen the best response.0
Let \(x\) be a64's number of fans. Let \(y\) be s.k.'s number of fans. We have \(y(x; w=0)=x_i343.\) which is the initial value for \(y\) based on the initial value of \(x.\) Based on how they gain fans, we have: \(y(x,w)=x_i343+3w.\) We want to find the point at which \(y(x,w)=2x(w)\). Note that \(x(w)=x_i+2w.\) Thus we have, \(x_i343+3w=2x_i+4w.\) Let's let \(x_i\) be a constant. So, we have: \(x_i343=w\) We assume that \(x_i \in \mathbb{Z}^+.\) This tells us that \(y(x,w)\) will never have twice as many fans as \(x(w)\) if the functions behave as they have been defined. It actually says that we would have to go "backward" to reach a point where \(y(x,w)\) had twice as many fans as \(x(w)\). Also, you contradicted yourself, lgba: "let's say both of them start at 0..." This contradicts the premise that they would start in relation to one another. (i.e. \(y(x;w=0)=x_i343\) and \(x(w)=x_i+2w.\)) Now let's suppose this: Both \(x\) and \(y\) start at some value \(x_0\) and \(y_0\) respectively. Their growth functions are \(x(w)=x_0+2w\) and \(y(w)=y_0+3w.\) If we want to find the point at which \(y(w)=2x(w),\) we have \(y_0+3w=2x_0+4w\) which is \(w=y_02x_0.\) You can see how this makes no sense in your original presumptions. We can continue this logic further and deduce that this problem makes no sense if \(x_0 > \frac{y_0}{2}.\) What I find most interesting is that while there is no point in future time that \(y(w)=2x(w),\) there is a point where \(y(w)=x(w).\) This happens to be \(w=x_0y_0.\) It is this fact that makes one speculate that there is a point where \(y(w)=2x(w)\), but there is no such point in future time.
 one year ago

LimitlessBest ResponseYou've already chosen the best response.0
Oh, cool! I also figured out something else: \[ \begin{align} f(x)&=m_fx+b_f\\ g(x)&=m_gx+b_g\\ \lim_{x \to \infty }\frac{f(x)}{g(x)}&=\frac{m_f}{m_g} \end{align} \] This explains everything.
 one year ago

LimitlessBest ResponseYou've already chosen the best response.0
(Note: that infinity should be \(+\infty.\))
 one year ago

ganeshie8Best ResponseYou've already chosen the best response.0
@lgbasallote let's say both of them start at 0... 1st week  s.k is 3... a64 is 2 2nd week  6  4 3rd week  9  6 4th week  12  8 5th week  15  10 6th week  18 12 . . . 100th week  300  200 1000th week  3000  2000 10000th week  30000  20000 lol both must have died by now... the trick is "a 3t rate can never increase its value to 2(2t)"
 one year ago

LimitlessBest ResponseYou've already chosen the best response.0
@ganeshie8, I just said that. You essentially copied my work.
 one year ago

ganeshie8Best ResponseYou've already chosen the best response.0
lol.. i copied your work :)
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
but...but... T_T sorry @saifoo.khan seems amistre is unbeatable
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
but...but... T_T sorry @saifoo.khan seems amistre is unbeatable
 one year ago

LimitlessBest ResponseYou've already chosen the best response.0
@lgbasallote, you can get above amistre. You simply cannot get to where you are double him.
 one year ago

lgbasalloteBest ResponseYou've already chosen the best response.0
yeah...what i meant lol
 one year ago

saifoo.khanBest ResponseYou've already chosen the best response.0
@lgbasallote = Good for nothing!!! =__= Jk
 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.