Recent content by Xori

Ah, I get it, thanks! Forgot that factoring only gives you one possible solution, not the only solution :P

Ok, just did it for all of em and got the right answer (D)! Although I see that picking small numbers and plugging would be a better strategy on test day, but wanted to understand the notation first :P Thanks so much for your help!

Ah, I think I get it. So to evaluate choice (A), I would do the following(?): f(x) = 1 - x <-- set up provided by (A) f(1 - x) = 1 - (1 - x) <--- plugging in (1-x) for x f(1 - x) = x <--- restating So now I have the two following statements: f(x) = 1 - x f(1 - x) = x If I...

This is a problem from my GMAT practice exam that gives me the right answer but not an explanation as to why. The question is formatted as a data sufficiency question, which means that it asks you whether a pair of statements would be individually and / or together sufficient to answer the...

So I should substitute (1-x) for (x) in every of the 5 choices and see which still equals (1-x)?

OK, so I'm taking this GMAT practice test online, and I got stuck on this question. The software tells me the correct answer, but not the explanation. What I'm really stuck on is the wording of the question - it's been 10 years since my last calculus class, and even though it's an algebra...

Most people are happier to learn about the drunk driving of Paris Hilton than to pick up a book on an educational subject.

So JoeDawg, according to you, a free market fails because people sometimes can't afford stuff? There has to be a way to allocate limited resources to unlimited wants. There's no "fair" method, any method will favor one group of people to another. Like I said, name a "fair" method that...

How does it know any difference? It just does what satisfies itself. It can say "I have free will because I'm choosing to do these things", when from our point of view it really doesn't.

Because it is the only definition that can fit the impliciations of the words being used, as well as what people perceive it to mean. Otherwise, you can say that the computer I'm sitting at right now has free will.

The ability to manage money is only one of the requirements of becoming wealth. Earning is important too. Incomes are correlated to IQs, as much as you'd like to say otherwise. http://en.wikipedia.org/wiki/IQ Plz stop saying opinions that are completely irrelavant. You're losing...

Plane on a treadmill I read this puzzle recently, There is a plane on an endless treadmill. The thing about this treadmill is that however fast the plane is moving forward, the treadmill goes the same speed backwards. Would a plane be able to take off of this treadmill? The only...

Gases have friction between them.

That's the same as asking "Can God create a rock so heavy that not even he could move it?" I'm not sure if this logic disproves omnipotence, but it is illogical in my mind to begin with.

Has today's questions-&-answers session between Ahmadinejad and a bunch of students at Columbia University been released yet? Anyone have a link?