Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Sep 1507:00 PM EDT
-09:00 PM EST
Elite scores are possible when you enroll in a powerful GMAT course, taught live online + 6 months access to TTP OnDemand video courses included! Class starts Tues/Thurs Sept. 15, 2026 - Nov. 15, 2027, 7:00pm-9:00pm EST
Sep 2107:00 PM EDT
-10:00 PM EDT
Boost your GMAT score in less than one month in a live online class + 6 months access to TTP OnDemand video courses included! Class starts Mon, Tues, Wed, Thur, Fri Sept. 21, 2026 - Oct. 9, 2027, 7:00pm-10:00pm EST
15 Feb 2018, 20:23
Kudos
Bookmarks
A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
(N/A)
Question Stats:
33% (03:06) correct
67%
(01:31)
wrong
based on 3
sessions
History
Date
Time
Result
Not Attempted Yet
Is x > 0?
(1) | 2x − 12 | < 10
(2) x^2 − 10x ≥ − 21
(1) | 2x − 12 | < 10
(2) x^2 − 10x ≥ − 21
(A): (1) SUFFICIENT: Manipulate the absolute value expression to represent this inequality on a number line: | 2x − 12 | < 10 | 2( x − 6) | < 10 2 | x − 6 | < 10 | x − 6 | < 5 This can be interpreted as “The distance between x and 6 is less than 5.” On a number line, this is the region between 1 and 11: All possible values for x are positive, so the answer to the question is a definite “Yes.” (2) INSUFFICIENT: Manipulate the inequality to get 0 on one side, thenfactor the resulting quadratic: x2 − 10x ≥ − 21 x2 − 10x + 21 ≥ 0 (x − 7)( x − 3) ≥ 0 The factored quadratic on the left side will equal 0 when x = 3 and 7. These are the boundary points. On a number line, check the regions on either side of these boundary points to determine the valid region( s) for x: Note that when 3 < x < 7, (x − 7)( x − 3) = (neg)( pos) = neg. Since both positive and negative values are possible for x, the answer is “Maybe.” The correct answer is (A).
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Data Sufficiency (DS) Forum
Still interested in this question? Check out the "Best Topics" block below for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
15 Feb 2018, 20:48
Kudos
Bookmarks
kkrrsshh
Discussed here: is-x-152912.html Hope it helps.
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Data Sufficiency (DS) Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
Moderator:
