Search found 20 matches
- by giatch
Thu Jan 01, 2009 7:49 pm- Forum: Data Sufficiency
- Topic: Inequality
- Replies: 14
- Views: 2263
..
haha..actually he did ruin it....i understand now... i didnt think to approach the question like that...what confused me was the absolute value on both sides...when i was going through the OG, there werent any questions that covered a inequality like that...i came across this browsing through the ne...
- by giatch
Thu Jan 01, 2009 7:35 pm- Forum: Data Sufficiency
- Topic: Inequality
- Replies: 14
- Views: 2263
..
hrm..
okay..using statement 2..
a)x<y
if k>0, then y+k> x+k
if k<0...we know that y is greater than x, but not by how much, but since a constant negative value of k is being added to both sides, then y+k is still > x+k
b)x>-y ...
actually, im not sure what to do here..
- by giatch
Thu Jan 01, 2009 7:27 pm- Forum: Data Sufficiency
- Topic: Inequality
- Replies: 14
- Views: 2263
- by giatch
Thu Jan 01, 2009 7:14 pm- Forum: Data Sufficiency
- Topic: Inequality
- Replies: 14
- Views: 2263
inequality
This is how I approached the question. I'm not sure if i approached it correctly. I know that when you have an inequality with an absolute value, you must have two scenarios (+ve or -ve). Im not sure what you do with absolute values on both sides. |x+k|<|y+k| (1)k> 0 (2) |x|<|y| a) (y+k) is +ve x+k ...
- by giatch
Thu Jan 01, 2009 7:11 pm- Forum: Data Sufficiency
- Topic: Inequality
- Replies: 14
- Views: 2263
- by giatch
Thu Jan 01, 2009 6:05 pm- Forum: Data Sufficiency
- Topic: Inequality
- Replies: 14
- Views: 2263
ahh
thanks guys for the help.. i get it now.. i was having a hard time figuring out which numbers to use.. i suppose for questions like this, if it is not specified that the variables are integers, start by picking #'s like 1/2, etc. out of curiosity, would you start the stem assuming that the equation ...
- by giatch
Thu Jan 01, 2009 4:47 pm- Forum: Data Sufficiency
- Topic: DS Question
- Replies: 10
- Views: 2176
clarify
1. 2x> y
2x - y > 0
We can simplfy this to X-Y so insuf
---------
How do you simply 2x-y to x-y? Or do you mean, you cannot simply, so insufficient?
- by giatch
Thu Jan 01, 2009 3:55 pm- Forum: Data Sufficiency
- Topic: DS Question
- Replies: 10
- Views: 2176
DS Question
Is x> y?
1. 2x> y
2. y <0
Anyone have any idea of how you go about solving this? Like how would you pick numbers to get a solution? or is there some method to approach this question?
- by giatch
Wed Dec 31, 2008 9:13 pm- Forum: Data Sufficiency
- Topic: DS Question
- Replies: 10
- Views: 2176
Special Triangles Question
Could someone please clear up something for me.. For the special triangles, i.e. 1) 3:4:5 with side 5 opposite the right angle 2)12:5:3 with 13 opposite the right angle What are the measure of the other two angles for these two respective triangles? Does it matter? Will it be the 30:60:90 triangle o...
- by giatch
Mon Dec 29, 2008 12:58 pm- Forum: GMAT Math
- Topic: Special Triangles Question
- Replies: 2
- Views: 2276
Still confused?
thanks for the help..but i'm still not completely understanding this statement. |-2| = - (-2) = 2 (since x is -2 , -(x) =- (-2) = 2) it says that k equals the absolute value of -2, which equals 2..now, why are you putting -(-2) = 2? i understand that absolute values usually refer to distance...what ...
- by giatch
Fri Dec 26, 2008 10:38 pm- Forum: Problem Solving
- Topic: GMAT Prep Question
- Replies: 3
- Views: 1204
GMAT Prep Question
Is |K| = 2?
1) k^2 = 4
2) k = |-2|
I answered A, but the OA is D.
I'm a bit confused about the property of inequality rules here...
I understand k=+/- 2 for statement 1..
But what exactly do you do with the second statement? What do the rules say for that?
- by giatch
Fri Dec 26, 2008 10:25 pm- Forum: Problem Solving
- Topic: GMAT Prep Question
- Replies: 3
- Views: 1204
another geo problem
In the above circle, the radius is 6 and the chord AB=6. What is the area of the shaded region?
2pi -3root3
4pi -4root3
4pi -9root3
6pi -6root3
6pi-9root3
See attachment for figure.
- by giatch
Fri Dec 26, 2008 3:52 pm- Forum: Problem Solving
- Topic: another geo problem
- Replies: 5
- Views: 5592
rule
how do you know they are similar angles? is it because they share one common angle and one common side?
- by giatch
Fri Dec 26, 2008 3:50 pm- Forum: Problem Solving
- Topic: Difficult Geometry Question
- Replies: 8
- Views: 6609
Difficult Geometry Question
In the above circle, AB=4, BC=6, AC=5, AD=6. What is the length of DE?
a)6
b)7.5
c)8
d)9
e)10
Please see attachment for figure
- by giatch
Fri Dec 26, 2008 3:04 pm- Forum: Problem Solving
- Topic: Difficult Geometry Question
- Replies: 8
- Views: 6609