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Mathematics 8 Online
OpenStudy (anonymous):

find all real numbers x such that 4x -18 < 2 or -17x-8 <-25

OpenStudy (anonymous):

\[4x -18 <2 or -17x -8 \le -25 \]

OpenStudy (zzr0ck3r):

4x-18<2 solve for x 4x<20 x<5 do the same thing for the other one and tell me what you have

terenzreignz (terenzreignz):

Same equations as here http://openstudy.com/study#/updates/51d3a16be4b08d0a48e4bedd So we can jump right at \[\Large \color{blue}{x\ge 5}\]and\[\Large \color{red}{x\le1}\] immediately.... if you don't mind...

terenzreignz (terenzreignz):

rather, same inequalities (facepalm)

terenzreignz (terenzreignz):

Oh, wait, no.

OpenStudy (zzr0ck3r):

:)

terenzreignz (terenzreignz):

This time it's less than ... (double facepalm)

terenzreignz (terenzreignz):

You know what... two fails in one question is a sign that @zzr0ck3r should do it -.-

OpenStudy (zzr0ck3r):

4x-18<2 solve for x 4x<20 x<5 doing the same thing for the other equation -17x-8 <-25 -17x<-17 x>1 so 1<x<5

OpenStudy (zzr0ck3r):

do you see how I did this?

terenzreignz (terenzreignz):

Though you probably shouldn't compound them into 1 < x < 5 that kind of implies an AND instead of an OR as it is in the question. Just sayin' :)

OpenStudy (zzr0ck3r):

yeah so x>1 or x<5

terenzreignz (terenzreignz):

Let's graph :D |dw:1372826226662:dw|

terenzreignz (terenzreignz):

First, \(x\ge1\) Shaded circle above 1, and the \(\ge \) 'points to the right' so...|dw:1372826307449:dw|

OpenStudy (anonymous):

so would it like |dw:1372826123312:dw|

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