Help me understand this problem

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Help me understand this problem

by gmatplayer » Mon Jun 01, 2009 9:23 pm
Which of the following inequalities is an algebric expression for the shaded part of the number line?

FIGURE DESCRIPTION: Shaded part is the part on number line from -5 to 3 inclusive

(A) |X| LESS THAN OR EQUAL TO 3

(B) |X| LESS THAN OR EQUAL TO 5

(C) |X-2| LESS THAN OR EQUAL TO 3

(D) |X-1| LESS THAN OR EQUAL TO 3

(E) |X+1| LESS THAN OR EQUAL TO 4

SOURCE OG-12 (#130)

What is asked exactly here?

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by sacx » Tue Jun 02, 2009 1:47 am
---------- -5 ----------------- x -------------- 3 -----------------


The question is asking which inequality expresses the region

-5<= x <= 3

|x+1| <= 4
x+1 <= 4 and -x-1 <= 4
x<=3 and x >= -5
-5<= x <= 3

E
SACX

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about integers...

by Anait » Tue Jun 02, 2009 3:20 am
HI )

Would you be so kind to explain this ex.:

How many integers n greater then 10 and less then 100 are there such that, the resulting integer is n-9?
A 5
B 6
&#1057; 7
D 8
E 9

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by gmatplayer » Tue Jun 02, 2009 5:16 am
Oh!!
So we just need to remove absolute sign and find two values of x that defines endpoints of shaded line.
Never faced this kind of question before, was confused by language
Thanks

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by gmatplayer » Tue Jun 02, 2009 5:19 am
Oh!!
So we just need to remove absolute sign and find two values of x that defines endpoints of shaded line.
Never faced this kind of question before, was confused by language
Thanks