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Loser66
 one year ago
@freckles Please, what is it and how to solve?
http://gyazo.com/459407d28e6cdad59dc032766fc7ac02
Loser66
 one year ago
@freckles Please, what is it and how to solve? http://gyazo.com/459407d28e6cdad59dc032766fc7ac02

This Question is Closed

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1I have another one and not sure what they want me to do Appreciate any tips. http://gyazo.com/7e43f8ee6a66384dfb6b5689e3bc447d

myininaya
 one year ago
Best ResponseYou've already chosen the best response.1I don't get the first one seems like things are missing

Empty
 one year ago
Best ResponseYou've already chosen the best response.3I don't understand what the first question is even asking to be honest, it seems incomplete.

Empty
 one year ago
Best ResponseYou've already chosen the best response.3The second question: The first statement only implies that if we plug in \(a\ne0\) that \(b \ne 0\) which doesn't specify anything on its own, we still have any other combination we can pick for a and b. The second statement is identical to the question's statement, just add 9b to both sides and multiply both sides by 5. So it doesn't give us any new information either.

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1So??? what is the answer?

Empty
 one year ago
Best ResponseYou've already chosen the best response.3What are you confused about?

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1This is the first time I see this kind of question. I don't know what the goal of the problem. What am I supposed to do?

myininaya
 one year ago
Best ResponseYou've already chosen the best response.1could you fix up number 6 a little

Empty
 one year ago
Best ResponseYou've already chosen the best response.3I interpreted this as asking if we had enough information to solve uniquely for the value of a and b.

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1To your logic, the last one is the corrext answer, right?

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1@myininaya what do you mean by "fix up"? How can I fix it?

myininaya
 one year ago
Best ResponseYou've already chosen the best response.1I mean to make it readable

myininaya
 one year ago
Best ResponseYou've already chosen the best response.1it makes no sense as is

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1This is the site where I am working http://mba.graduateshotline.com/gmat_quantitative_test.html#.VZSVSEZRIoo

Empty
 one year ago
Best ResponseYou've already chosen the best response.3Well the question is literally asking if that statement is true which is basically identical to my statement that a=b or a=/=b. We can't determine the truth value of it based on the information given so yes, the last answer is correct.

myininaya
 one year ago
Best ResponseYou've already chosen the best response.1yep they don't make it make anymore sense

myininaya
 one year ago
Best ResponseYou've already chosen the best response.1I'm gonna take a guess: \[<x>=x+\frac{x}{2}2 \]

myininaya
 one year ago
Best ResponseYou've already chosen the best response.1\[10=w+\frac{w}{2}2 \]

Empty
 one year ago
Best ResponseYou've already chosen the best response.3Yeah it's nonsense, they don't even say what w is supposed to represent lol

myininaya
 one year ago
Best ResponseYou've already chosen the best response.1\[20=2w+w4 \\ 20=3w4 \\ 24=3w \\ w=8\] but I didn't interpret what they so clearly meant :p

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1OMG!! I will fail for sure. Thanks for the help @Empty @myininaya

myininaya
 one year ago
Best ResponseYou've already chosen the best response.1Well you won't fail if they can make the questions clear

myininaya
 one year ago
Best ResponseYou've already chosen the best response.1It really is not clear what they are saying there

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1Thank you so much. Anyway, it is just 1 out of 10. hehehe... no failure.!!

Empty
 one year ago
Best ResponseYou've already chosen the best response.3Yeah failing this is equivalent to failing to answer someone when they ask you what's the length of potato? You shouldn't feel too bad about some of these questions lol.

myininaya
 one year ago
Best ResponseYou've already chosen the best response.1I would be afraid to click anything on that site they might somehow try to hack my person information that is how screwed up some of the questions look

myininaya
 one year ago
Best ResponseYou've already chosen the best response.1in number 4 which is the shaded region

myininaya
 one year ago
Best ResponseYou've already chosen the best response.1the darker shade or the lighter shade

ikram002p
 one year ago
Best ResponseYou've already chosen the best response.0for this one its C :P and thats all i know xD http://gyazo.com/7e43f8ee6a66384dfb6b5689e3bc447d

myininaya
 one year ago
Best ResponseYou've already chosen the best response.1I really don't understand how I can play with the symbols in 6 to get some better than what I already said like is there any other way to read <x>=x+x/22 if that is really what they meant to write and it has to be <w>=10 in order to even find w

myininaya
 one year ago
Best ResponseYou've already chosen the best response.1ok I think number 6 should not have that 2 there: the answer is 20/3 \[<x>=x+\frac{x}{2} \\ <w>=w+\frac{w}{2} =10 \\ \frac{3w}{2}=10 \\ w=\frac{2(10)}{3}=\frac{20}{3}\]

myininaya
 one year ago
Best ResponseYou've already chosen the best response.1Ok for some reason 8 is D.... I thought we were suppose to pick 1 or 2 or both to see which implied y<0 well if 5y>0 then y<0 but if y^5<0 then y^5>0 and so y>0 so I don't see how 8 is D

myininaya
 one year ago
Best ResponseYou've already chosen the best response.1anyways I'm going to stop playing with this

beginnersmind
 one year ago
Best ResponseYou've already chosen the best response.0@ikram002p @Loser66 "for this one its C :P and thats all i know xD http://gyazo.com/7e43f8ee6a66384dfb6b5689e3bc447d " I think it's B actually, but the question is really poorly worded. I _think_ they are asking whether statement (1) alone implies 5a9b=0 (P). Or if (2) alone implies P. Or if (1) and (2) implies P. etc. In this case 25a = 45b does imply 5a9b = 0, so (B) is true.

myininaya
 one year ago
Best ResponseYou've already chosen the best response.1yes B is correct for that one

myininaya
 one year ago
Best ResponseYou've already chosen the best response.11A 2A 3C 4A 5C 6A 7D 8D 9B 10B Imputing the above will give a score of 100

ikram002p
 one year ago
Best ResponseYou've already chosen the best response.0haha yeah i must made a silly typo

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.0this is silly. First. If it is an operation (binary?) then it is a function from some AxAxA.... into some set B, depending if it is unary, binary, ...... Since it is implied that we can perform this operation on one value w, then it must be unary. So we have a function f:A>B. Now lut us rephrase the questions We have a function f s.t. f(x) =x+x/2+2 when x<= 10. Now the fact that x<= 10 implies that the set A is a subset of R. So that f(w) is not defined.

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.0But ok let us say there is some set A, s.t. w,10 are both in A. Well now we can have the function be defined for both 10 and w. But then the question is, what is the value of w. which of course we do not know since we argued that this set must contain 10 and w and we were not given the definition of the set, so this cant be a function as they come with a rule by definition.

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.0sorry, it's a special day in Oregon and I got meta.

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1@zzk0ck3r When you have time, please continue your argument. @myininaya Thanks for trying. You tried on it and got 100. So that you didn't know what is going on when you get wrong. If you get something wrong, you have no way to know which one is wrong and how to fix it. Because they give you the score and the percentage only, no explanation, no point out the wrong answer. Anyway, that is the good site to practice solving basic math problems in shortest time. I am looking for GRE for math students. If you know some free site, please send me the link. Much appreciate. :)

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.0That was it, either way we get something that does not make sense

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.0For a function, you must not only have it be well defined and defined everywhere, you must have a rule for the map. In the second case we have no way of assigning that rule to w because we dont know what w is :)

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.0A function is a set of ordered pairs and without the rule we cant make the pairs, so we don't have a function, so we don't have an operation.

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1Thank you for the explanation. :)
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