someone explain this GMAT math question to me

[GoingUp]

What is the value of x?

(1) (x + 2)(x + 3) = 0

(2) x^2 +5x +6 = 0


Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

EACH statement ALONE is sufficient.

Statements (1) and (2) TOGETHER are NOT SUFFICIENT

How is it possibly the last answer? You can clearly figure out that x = -2 and it will work in both of these.

 

[GoingUp]

Heres another one....

In the equation 12 = 2x ? ky, k is a constant and y equals 2 when x equals 1. When x equals 7, what is the value of y?


2

2/5

-2/5

?2

?5


I had it figured out as 2/5. I dont see how its -2/5

 

[Reel]

For the first one, you have 2 possible values for x for each statement. Therefore they are not sufficient individually. In 1, x could be -2 or -3.

 

[z0mb13]

Originally posted by: Gobadgrs
What is the value of x?

(1) (x + 2)(x + 3) = 0

(2) x^2 +5x +6 = 0


Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

EACH statement ALONE is sufficient.

Statements (1) and (2) TOGETHER are NOT SUFFICIENT

How is it possibly the last answer? You can clearly figure out that x = -2 and it will work in both of these.

for equation one, x can be either -2 or -3

for equation two, x can be either -3 or -2

so using both equations, you dont have sufficient info to find what x is, hence the answer

 

[Ranger X]

Originally posted by: Gobadgrs
What is the value of x?

(1) (x + 2)(x + 3) = 0

(2) x^2 +5x +6 = 0


Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

EACH statement ALONE is sufficient.

Statements (1) and (2) TOGETHER are NOT SUFFICIENT

How is it possibly the last answer? You can clearly figure out that x = -2 and it will work in both of these.

It's because -3 also works.

 

[audi]

quick edit rangerstar

 

[GoingUp]

Originally posted by: Reel
For the first one, you have 2 possible values for x for each statement. Therefore they are not sufficient individually. In 1, x could be -2 or -3.

damn... i never considered -3. -2 worked and I just submitted it....

ok what about the second ? that I had

 

[Ranger X]

Originally posted by: audi
quick edit rangerstar

You're an idiot.

 

[icejunkie]

i love math.

 

[Random Variable]

12=2(1)-2k
k=-5

12=2(7)+5y
y=-2/5

 

[RaynorWolfcastle]

Jebus, is this what's considered a difficult question for business majors?

 

[Reel]

Originally posted by: Gobadgrs

Originally posted by: Reel
For the first one, you have 2 possible values for x for each statement. Therefore they are not sufficient individually. In 1, x could be -2 or -3.

damn... i never considered -3. -2 worked and I just submitted it....

ok what about the second ? that I had

work out the first equation:
12 = 2x - ky.
12 = 2 - k*2.
10 = - -5*2
so k = -5.

then second.
12 = 2*7 - -5y.
-2 = 5y.
y = - 5/2

 

[iamwiz82]

Where are you planning on going? OU?

 

[GoingUp]

Originally posted by: Vespasian
12=2(1)-2k
k=-5

12=2(7)+5y
y=-2/5

damn.... i missed the fact that when you subtract a negative number its the same as adding it. Whoops!

Math is what carries me on this test. The English part rapes my ass. I just cant properly visualize their questions. I need to be writing the phrases, not trying to correct them in mid sentence. Look at some of these.



As a concept once considered for a foundation of economic theory, the rational actor model may soon go the way of the Model T as psychologists have provided more detailed information describing the emotional, familial, and historical factors that affect individual behavior in the marketplace.


As a concept once considered for a foundation of economic theory, the rational actor model may soon go the way of the Model T as psychologists have provided more detailed information describing the emotional, familial, and historical factors that affect individual behavior in the marketplace.

The rational actor model, a concept long considered the cornerstone of economic theory, may soon go the way of the Model T as psychologists are providing more detailed information about the emotional, family influence, and history that affect individual behavior in the marketplace.

A concept long considered the cornerstone of economic theory, the rational actor model, may soon go the way of the Model T for psychologists who provide more detailed information describing the emotional, family influence, and historical factors that affect individual behavior in the marketplace.

A concept long considered to be the cornerstone of economic theory, the rational actor model, is soon to be going the way of the Model T for psychologists who are providing more detailed information about the emotional, family influence, and historical factors that affect individual behavior in the marketplace.

The rational actor model, a concept long considered the cornerstone of economic theory, may soon go the way of the Model T as psychologists provide more detailed information describing the emotional, familial, and historical factors that affect individual behavior in the marketplace.


Contestants entering the competition for the third or fourth time are likely to be at a significant advantage and are frequently able to outperform their less-seasoned rivals.


likely to be at a significant advantage and are frequently able to

likely significantly advantaged and frequently able to

liable to be significantly advantaged and can frequently

liable that they are at a significant advantage and can frequently

at a significant advantage, frequently likely to be able that they can

 

[ohtwell]

For the first one, it seems like both are sufficient alone, since the equation in A is just the brokend down version of B. I have no idea how neither is sufficient. Weird!!

nm: It's probably because you have two possible X values for the equations.


: ) Amanda

 

Originally posted by: Gobadgrs

Originally posted by: Vespasian
12=2(1)-2k
k=-5

12=2(7)+5y
y=-2/5

damn.... i missed the fact that when you subtract a negative number its the same as adding it. Whoops!

Math is what carries me on this test. The English part rapes my ass. I just cant properly visualize their questions. I need to be writing the phrases, not trying to correct them in mid sentence. Look at some of these.



As a concept once considered for a foundation of economic theory, the rational actor model may soon go the way of the Model T as psychologists have provided more detailed information describing the emotional, familial, and historical factors that affect individual behavior in the marketplace.


As a concept once considered for a foundation of economic theory, the rational actor model may soon go the way of the Model T as psychologists have provided more detailed information describing the emotional, familial, and historical factors that affect individual behavior in the marketplace.

The rational actor model, a concept long considered the cornerstone of economic theory, may soon go the way of the Model T as psychologists are providing more detailed information about the emotional, family influence, and history that affect individual behavior in the marketplace.

A concept long considered the cornerstone of economic theory, the rational actor model, may soon go the way of the Model T for psychologists who provide more detailed information describing the emotional, family influence, and historical factors that affect individual behavior in the marketplace.

A concept long considered to be the cornerstone of economic theory, the rational actor model, is soon to be going the way of the Model T for psychologists who are providing more detailed information about the emotional, family influence, and historical factors that affect individual behavior in the marketplace.

The rational actor model, a concept long considered the cornerstone of economic theory, may soon go the way of the Model T as psychologists provide more detailed information describing the emotional, familial, and historical factors that affect individual behavior in the marketplace.


Contestants entering the competition for the third or fourth time are likely to be at a significant advantage and are frequently able to outperform their less-seasoned rivals.


likely to be at a significant advantage and are frequently able to

likely significantly advantaged and frequently able to

liable to be significantly advantaged and can frequently

liable that they are at a significant advantage and can frequently

at a significant advantage, frequently likely to be able that they can

Geez, you'll go far swearing left and right when anxious and nervous about your GMAT exam. :roll:

Could you elaborate on what they want you to do with the English portion? You just posted the options without indicating what they requested.

 

[Heisenberg]

Originally posted by: RaynorWolfcastle
Jebus, is this what's considered a difficult question for business majors?

Hehe, apparently so.

 

[Gibson486]

Originally posted by: Heisenberg

Originally posted by: RaynorWolfcastle
Jebus, is this what's considered a difficult question for business majors?

Hehe, apparently so.

:Q, what do they teach them is school?

 

[GoingUp]

Originally posted by: DearQT

Originally posted by: Gobadgrs

Originally posted by: Vespasian
12=2(1)-2k
k=-5

12=2(7)+5y
y=-2/5

damn.... i missed the fact that when you subtract a negative number its the same as adding it. Whoops!

Math is what carries me on this test. The English part rapes my ass. I just cant properly visualize their questions. I need to be writing the phrases, not trying to correct them in mid sentence. Look at some of these.



As a concept once considered for a foundation of economic theory, the rational actor model may soon go the way of the Model T as psychologists have provided more detailed information describing the emotional, familial, and historical factors that affect individual behavior in the marketplace.


As a concept once considered for a foundation of economic theory, the rational actor model may soon go the way of the Model T as psychologists have provided more detailed information describing the emotional, familial, and historical factors that affect individual behavior in the marketplace.

The rational actor model, a concept long considered the cornerstone of economic theory, may soon go the way of the Model T as psychologists are providing more detailed information about the emotional, family influence, and history that affect individual behavior in the marketplace.

A concept long considered the cornerstone of economic theory, the rational actor model, may soon go the way of the Model T for psychologists who provide more detailed information describing the emotional, family influence, and historical factors that affect individual behavior in the marketplace.

A concept long considered to be the cornerstone of economic theory, the rational actor model, is soon to be going the way of the Model T for psychologists who are providing more detailed information about the emotional, family influence, and historical factors that affect individual behavior in the marketplace.

The rational actor model, a concept long considered the cornerstone of economic theory, may soon go the way of the Model T as psychologists provide more detailed information describing the emotional, familial, and historical factors that affect individual behavior in the marketplace.


Contestants entering the competition for the third or fourth time are likely to be at a significant advantage and are frequently able to outperform their less-seasoned rivals.


likely to be at a significant advantage and are frequently able to

likely significantly advantaged and frequently able to

liable to be significantly advantaged and can frequently

liable that they are at a significant advantage and can frequently

at a significant advantage, frequently likely to be able that they can

Geez, you'll go far swearing left and right when anxious and nervous about your GMAT exam. :roll:

Could you elaborate on what they want you to do with the English portion? You just posted the options without indicating what they requested.

I was posting them as an example. My point was that I have difficulty answering the questions with how they are phrased. I also dont like the reading comprehension questions where your answer depends on what was "implied" because implication is so subjective.

 

Originally posted by: Gobadgrs

Originally posted by: DearQT

Originally posted by: Gobadgrs

Originally posted by: Vespasian
12=2(1)-2k
k=-5

12=2(7)+5y
y=-2/5

damn.... i missed the fact that when you subtract a negative number its the same as adding it. Whoops!

Math is what carries me on this test. The English part rapes my ass. I just cant properly visualize their questions. I need to be writing the phrases, not trying to correct them in mid sentence. Look at some of these.



As a concept once considered for a foundation of economic theory, the rational actor model may soon go the way of the Model T as psychologists have provided more detailed information describing the emotional, familial, and historical factors that affect individual behavior in the marketplace.


As a concept once considered for a foundation of economic theory, the rational actor model may soon go the way of the Model T as psychologists have provided more detailed information describing the emotional, familial, and historical factors that affect individual behavior in the marketplace.

The rational actor model, a concept long considered the cornerstone of economic theory, may soon go the way of the Model T as psychologists are providing more detailed information about the emotional, family influence, and history that affect individual behavior in the marketplace.

A concept long considered the cornerstone of economic theory, the rational actor model, may soon go the way of the Model T for psychologists who provide more detailed information describing the emotional, family influence, and historical factors that affect individual behavior in the marketplace.

A concept long considered to be the cornerstone of economic theory, the rational actor model, is soon to be going the way of the Model T for psychologists who are providing more detailed information about the emotional, family influence, and historical factors that affect individual behavior in the marketplace.

The rational actor model, a concept long considered the cornerstone of economic theory, may soon go the way of the Model T as psychologists provide more detailed information describing the emotional, familial, and historical factors that affect individual behavior in the marketplace.


Contestants entering the competition for the third or fourth time are likely to be at a significant advantage and are frequently able to outperform their less-seasoned rivals.


likely to be at a significant advantage and are frequently able to

likely significantly advantaged and frequently able to

liable to be significantly advantaged and can frequently

liable that they are at a significant advantage and can frequently

at a significant advantage, frequently likely to be able that they can

Geez, you'll go far swearing left and right when anxious and nervous about your GMAT exam. :roll:

Could you elaborate on what they want you to do with the English portion? You just posted the options without indicating what they requested.

I was posting them as an example. My point was that I have difficulty answering the questions with how they are phrased. I also dont like the reading comprehension questions where your answer depends on what was "implied" because implication is so subjective.

I agree. However, if you take a look, you actually are doing more than they intended. I am often guilty of thinking too much. The correct answer for the first example you gave about the rational actor model could easily be found if you look at the grammar structure. The first option is exactly the same as the one above it. "As a concept once considered for a foundation of economic theory..." seems questionable; or at the very least ambiguous. Is the concept a race between the economists and the psychologists? Couldn't it belong to both fields? It also places emphasis on the rational actor model's relation to economics as if it were significant. The other two say "for psychologists who provide...." It's pretty obvious that the concept couldn't be applied to each psychologist and [they] as individuals. (I guess you could say the same problem as option 1--ambiguity and emphasis placed on its relation to economics.) The concept is applied relative to the field of psychology and to the individual behavior in the marketplace; hence the best fit answer is option number 2. I am assuming that they asked for the statement that best fit the intended meaning of statement 1. So try to look at the grammar structure to easily eliminate answers.

Edit: Oops! Error in numbers.

 

[z0mb13]

Originally posted by: Heisenberg

Originally posted by: RaynorWolfcastle
Jebus, is this what's considered a difficult question for business majors?

Hehe, apparently so.

I took the gmat and did very well on the math part

but I was a CS major in my undergrad..

 

[Albis]

honestly OP, don't stress it too much. i took my GMATs a couple months ago and did fine without too much studying. i bought the kaplan GMAT book and the kaplan 800 book and i was set.

i'm planning on teaching for kaplan soon so it'll be easy money. i hope NO ONE at ATOT takes a kaplan GMAT prep course b/c it's taught by students your own age. the only requirement they had was a 700+ on your GMATs and the ability to speak in public and you get to teach.

 

Originally posted by: Gobadgrs

Originally posted by: DearQT

Originally posted by: Gobadgrs

Originally posted by: Vespasian
12=2(1)-2k
k=-5

12=2(7)+5y
y=-2/5

damn.... i missed the fact that when you subtract a negative number its the same as adding it. Whoops!

Math is what carries me on this test. The English part rapes my ass. I just cant properly visualize their questions. I need to be writing the phrases, not trying to correct them in mid sentence. Look at some of these.



As a concept once considered for a foundation of economic theory, the rational actor model may soon go the way of the Model T as psychologists have provided more detailed information describing the emotional, familial, and historical factors that affect individual behavior in the marketplace.


As a concept once considered for a foundation of economic theory, the rational actor model may soon go the way of the Model T as psychologists have provided more detailed information describing the emotional, familial, and historical factors that affect individual behavior in the marketplace.

The rational actor model, a concept long considered the cornerstone of economic theory, may soon go the way of the Model T as psychologists are providing more detailed information about the emotional, family influence, and history that affect individual behavior in the marketplace.

A concept long considered the cornerstone of economic theory, the rational actor model, may soon go the way of the Model T for psychologists who provide more detailed information describing the emotional, family influence, and historical factors that affect individual behavior in the marketplace.

A concept long considered to be the cornerstone of economic theory, the rational actor model, is soon to be going the way of the Model T for psychologists who are providing more detailed information about the emotional, family influence, and historical factors that affect individual behavior in the marketplace.

The rational actor model, a concept long considered the cornerstone of economic theory, may soon go the way of the Model T as psychologists provide more detailed information describing the emotional, familial, and historical factors that affect individual behavior in the marketplace.


Contestants entering the competition for the third or fourth time are likely to be at a significant advantage and are frequently able to outperform their less-seasoned rivals.


likely to be at a significant advantage and are frequently able to

likely significantly advantaged and frequently able to

liable to be significantly advantaged and can frequently

liable that they are at a significant advantage and can frequently

at a significant advantage, frequently likely to be able that they can

Geez, you'll go far swearing left and right when anxious and nervous about your GMAT exam. :roll:

Could you elaborate on what they want you to do with the English portion? You just posted the options without indicating what they requested.

I was posting them as an example. My point was that I have difficulty answering the questions with how they are phrased. I also dont like the reading comprehension questions where your answer depends on what was "implied" because implication is so subjective.

Oops, my bad! So I'll respond to the second one. The second English part question seems pretty obvious to me since the other options don't make any sense or relate to law.

 

[z0mb13]

Originally posted by: Albis
honestly OP, don't stress it too much. i took my GMATs a couple months ago and did fine without too much studying. i bought the kaplan GMAT book and the kaplan 800 book and i was set.

i'm planning on teaching for kaplan soon so it'll be easy money. i hope NO ONE at ATOT takes a kaplan GMAT prep course b/c it's taught by students your own age. the only requirement they had was a 700+ on your GMATs and the ability to speak in public and you get to teach.

yeah just get the kaplan book and keep practising!!! practise practise practise!!

use the CD and try to take a real timed test. The time pressure can really get to you during a live testing

GMAT score actually matters a lot. Schools use it to determine the amount of scholarship you can get

 

[Albis]

yeah i highly suggest using the kaplan cd that comes with the basic kaplan gmat book

also you can get 2 official computerized practice exams from GMAC.com i think