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8th grade test problem

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tastyvomit321 is not online. tastyvomit321
Joined: 01 Mar 2011
Total Posts: 13326
09 Nov 2011 07:07 PM
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Toby7 is not online. Toby7
Joined: 12 Feb 2008
Total Posts: 1533
09 Nov 2011 07:07 PM
lol

inequalities

lol

dev is right
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kenechukwu9 is not online. kenechukwu9
Joined: 27 Sep 2008
Total Posts: 1181
09 Nov 2011 07:08 PM
This inequalities right? If they are, I will solve it for you.
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crazyamaster is not online. crazyamaster
Joined: 22 Jan 2010
Total Posts: 5275
09 Nov 2011 07:10 PM
Ix-17I + 4 > 2
-4 -4
x-17>2
15?
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crazyamaster is not online. crazyamaster
Joined: 22 Jan 2010
Total Posts: 5275
09 Nov 2011 07:10 PM
You just subtract 4 from 4 and 4 from the 2.. you can't do anything else after that.
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wowzee is not online. wowzee
Joined: 02 Apr 2010
Total Posts: 22692
09 Nov 2011 07:11 PM
1-3= -2
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crazyamaster is not online. crazyamaster
Joined: 22 Jan 2010
Total Posts: 5275
09 Nov 2011 07:11 PM
Sorry it's -15.
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crazyamaster is not online. crazyamaster
Joined: 22 Jan 2010
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09 Nov 2011 07:12 PM
Thought I put the dash lol.
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XxJimmyxX is not online. XxJimmyxX
Joined: 15 Feb 2009
Total Posts: 7380
09 Nov 2011 07:12 PM
I'm in honors geometry and I have not a clue how to do that. That just shows how much I pay attention.
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dadnapped46 is not online. dadnapped46
Joined: 24 Dec 2009
Total Posts: 4821
09 Nov 2011 07:13 PM
x > 15

~google it,google knows all~
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crazyamaster is not online. crazyamaster
Joined: 22 Jan 2010
Total Posts: 5275
09 Nov 2011 07:15 PM
2-4=-2 ;o
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chrisdead2 is not online. chrisdead2
Joined: 23 Jan 2010
Total Posts: 8231
09 Nov 2011 11:38 PM
No, no. It's absoulute value.

So you'd split it into two problems.

Either way, my math teacher is wrong
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assassian111 is not online. assassian111
Joined: 18 Jul 2008
Total Posts: 8171
09 Nov 2011 11:40 PM
That's not even an equation. :x
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chrisdead2 is not online. chrisdead2
Joined: 23 Jan 2010
Total Posts: 8231
09 Nov 2011 11:42 PM
lx-17l + 4 > 2
Absoulute value ^^

anyways

lx-17l + 4 > 2
-4 > - 2

lx-17l > -2
+17 +17

x>15

then

lx-17l > 2
+17 +17

x > 19
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TheCryptKeeper is not online. TheCryptKeeper
Joined: 09 Oct 2010
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09 Nov 2011 11:44 PM
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chrisdead2 is not online. chrisdead2
Joined: 23 Jan 2010
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09 Nov 2011 11:45 PM
Depends on the school system. Honestly, this is quite easy.
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SCS is not online. SCS
Forum Moderator
Joined: 24 Jun 2008
Total Posts: 10075
09 Nov 2011 11:46 PM
"I" as in the imaginary unit, or as an arbitrary constant?
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chrisdead2 is not online. chrisdead2
Joined: 23 Jan 2010
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09 Nov 2011 11:48 PM
I meant to do as absoulute value things.
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Speedstack79 is not online. Speedstack79
Joined: 26 Feb 2011
Total Posts: 179
10 Nov 2011 12:08 AM
I think this is the answer to the problem


Answer: x > 15 and x < -19

Work to prove that it is correct :
I20-17I +4 > 2
7 > 2 true


I-10-17I +4 > 2
28 > 2 true

Is that what you are asking?

P.S. Instead of writing x > 15 and x < -19, you can also write 15 < x < -19
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Dev8 is not online. Dev8
Joined: 06 Jul 2008
Total Posts: 8509
10 Nov 2011 09:08 AM
@speedstack

Yeah, that's easier to write it. Compound inequality style! ​>.<
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crazyamaster is not online. crazyamaster
Joined: 22 Jan 2010
Total Posts: 5275
10 Nov 2011 05:14 PM
x+17+4>2
x+21>2
Lol.
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