Find all School-related info fast with the new School-Specific MBA Forum

It is currently 23 Jul 2014, 00:26

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

In the rectangular coordinate system, are the points (r,s)

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Intern
Intern
User avatar
Joined: 28 May 2003
Posts: 13
Followers: 0

Kudos [?]: 0 [0], given: 0

In the rectangular coordinate system, are the points (r,s) [#permalink] New post 24 Aug 2004, 14:27
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
In the rectangular coordinate system, are the points (r,s) and (u,v) equidistant from the origin?

(1) r+s=1
(2) u=1-r and v=1-s

The explaination in the OG makes no sense to me. Please help!
GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 07 Jul 2004
Posts: 5097
Location: Singapore
Followers: 16

Kudos [?]: 131 [0], given: 0

GMAT Tests User
 [#permalink] New post 24 Aug 2004, 18:06
1) Not sufficient. Does not tell anything anything about u and v

2) Not sufficient. Consider two cases, when (r,s) are at equal points such as (6,6) then (u,v) = (-5,-5). Their distance from the origin will then become 72^1/2 and 50^1/2.
Also consider the case when (r,s) are not equal, such as (-9,-10) then (u,v) = (10,11) and their distance are now 181^1/2 and 11^1/2.
But if (r,s)=(1/2,1/2) then (u,v) = (1/2,/1,2). Then their distance are equal.
So we don't know if they are equidistant from the origin without knowing more about r and s.

3) Use both.
Then (u,v) = (1-r, 1-s)= (1-1+s, 1-s) = (s,1-s)
(r,s) = (1-s, s)

Now calculating their distance from the origin, we get [s^2+(1-s)^2]^1/2 for both points. So using both equation are sufficient.

(C) is the answer.
  [#permalink] 24 Aug 2004, 18:06
    Similar topics Author Replies Last post
Similar
Topics:
In the rectangular co-ordinate systems, are the points (r,s) rkatl 2 22 Jul 2006, 15:00
In the rectangular coordinate system, are the points (r,s) mrmikec 6 15 Jun 2006, 00:12
In the rectangular coordinate system, are the points (r,s) alimad 2 07 Apr 2006, 04:09
In the rectangular coordinate system, are the points (r,s) MBAlad 10 21 Feb 2006, 07:31
In the rectangular coordinate system, are the points (r,s) ellisje22 3 04 Jan 2006, 18:00
Display posts from previous: Sort by

In the rectangular coordinate system, are the points (r,s)

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.