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14 Jul 2019, 23:35
Kudos
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
69% (00:53) correct
31%
(01:14)
wrong
based on 54
sessions
History
Date
Time
Result
Not Attempted Yet
Is x = 9?
(1) x^2 – 7x – 18 = 0
(2) x^2 – 10x + 9 = 0
(1) x^2 – 7x – 18 = 0
(2) x^2 – 10x + 9 = 0
Pure algebraic questions like this one are no longer part of the GMAT Data Sufficiency syllabus.
For relevant Data Sufficiency questions, please check the Data Sufficiency forum:
Data Sufficiency Forum
Data Sufficiency Forum
vinayakvaish
Joined: 29 May 2018
Last visit: 19 Oct 2020
Posts: 91
Given Kudos: 52
Location: India
Schools: Marshall '22 (A$) IIMA PGPX "21 (D) Duke '22 (D) IIMB EPGP "21 (A) McCombs '22 (A) IIMC MBAEx "21 (WD) Georgia Tech '22 (A$) Johnson '22 (WD)
GMAT 1: 700 Q48 V38
GMAT 2: 720 Q49 V39
GPA: 4
Schools: Marshall '22 (A$) IIMA PGPX "21 (D) Duke '22 (D) IIMB EPGP "21 (A) McCombs '22 (A) IIMC MBAEx "21 (WD) Georgia Tech '22 (A$) Johnson '22 (WD)
GMAT 2: 720 Q49 V39
Posts: 91
14 Jul 2019, 23:50
Kudos
Bookmarks
Statement 1: solving we get two roots
x= -2, 9
Not sufficient
Statement 2: Solving we get two roots
x=1,9
Not Sufficient
Combined we get x=9
Answer C
Hit Kudos!!
x= -2, 9
Not sufficient
Statement 2: Solving we get two roots
x=1,9
Not Sufficient
Combined we get x=9
Answer C
Hit Kudos!!
14 Jul 2019, 23:59
Kudos
Bookmarks
(1) x^2 – 7x – 18 = 0
Solving 1 gives x=-2,9
(2) x^2 – 10x + 9 = 0
Solving 2 gives x= 9,1
Combining 1&2, we have X=9
So C
Posted from my mobile device
Solving 1 gives x=-2,9
(2) x^2 – 10x + 9 = 0
Solving 2 gives x= 9,1
Combining 1&2, we have X=9
So C
Posted from my mobile device
