anonymous
  • anonymous
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Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
Michele_Laino
  • Michele_Laino
starting from inequality: \(8<2b\) I can divide both sides by \(2\) so I can write this: \[\frac{8}{2} < \frac{{2b}}{2}\] please simplify
anonymous
  • anonymous
How? :3

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Michele_Laino
  • Michele_Laino
what is 8:2=...?
anonymous
  • anonymous
what does ":" mean?
Michele_Laino
  • Michele_Laino
I mean 8 divided by 2
anonymous
  • anonymous
4
Michele_Laino
  • Michele_Laino
ok! now, what is 2/2=...?
anonymous
  • anonymous
1
Michele_Laino
  • Michele_Laino
ok! so that inequlity is equivalent to this one: \(44\)
Michele_Laino
  • Michele_Laino
inequality*
anonymous
  • anonymous
so then that would be it?
Michele_Laino
  • Michele_Laino
oops.. can*
Michele_Laino
  • Michele_Laino
please wait, we have to rewrite the second your inequality: \(2b+15<5\)
anonymous
  • anonymous
Oh
Michele_Laino
  • Michele_Laino
If I subtract 15 to both sides I get: \(2b+15-15<5-15\) please simplify
anonymous
  • anonymous
How would I simplify that?
texaschic101
  • texaschic101
keep in mind...since there are no equal signs in your inequalities, that means that the circles are open....that will automatically eliminate 2 of them
Michele_Laino
  • Michele_Laino
what is: 15-15=...? and what is 5-15=...?
anonymous
  • anonymous
0 and -10?
Michele_Laino
  • Michele_Laino
ok!
anonymous
  • anonymous
:D
anonymous
  • anonymous
what do you do with the 2b?
Michele_Laino
  • Michele_Laino
so we get: \(2b<-10\) now I divide both sides by 2, so I write this: \[\frac{{2b}}{2} < \frac{{ - 10}}{2}\]
Michele_Laino
  • Michele_Laino
what is 2/2=...? and what is -10/2=...?
Michele_Laino
  • Michele_Laino
hint: we get \(b<-5\)
Michele_Laino
  • Michele_Laino
so your set is represented by these inequalities: \(b>4\) \(or\) \(b<-5\)

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