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+0  
 
-5
52
1
avatar+44 

Question: The inequality |2x – 1| > 5 must be true in which one of the following cases? 
I. x < -5
II. x > 7
III. x > 0

(a) II only
(b) I, II and II
(c) I and II only
(d) I and III only
(e) I only

 Apr 23, 2019
 #1
avatar+100549 
+2

l 2x - 1 l   > 5       

 

We have two equations

 

2x - 1 > 5             and           - (2x - 1 ) > 5

2x > 6                                     -2x + 1 > 5

x > 3                                       -2x >  4

                                                  x < - 2

 

I  and II   will make this inequality true

 

cool cool cool

 Apr 23, 2019

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