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anonymous

  • one year ago

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  1. anonymous
    • one year ago
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    @Michele_Laino

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  2. Michele_Laino
    • one year ago
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    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

  3. anonymous
    • one year ago
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    How? :3

  4. Michele_Laino
    • one year ago
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    what is 8:2=...?

  5. anonymous
    • one year ago
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    what does ":" mean?

  6. Michele_Laino
    • one year ago
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    I mean 8 divided by 2

  7. anonymous
    • one year ago
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    4

  8. Michele_Laino
    • one year ago
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    ok! now, what is 2/2=...?

  9. anonymous
    • one year ago
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    1

  10. Michele_Laino
    • one year ago
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    ok! so that inequlity is equivalent to this one: \(4<b\), which caqn be rewritten as below: \(b>4\)

  11. Michele_Laino
    • one year ago
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    inequality*

  12. anonymous
    • one year ago
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    so then that would be it?

  13. Michele_Laino
    • one year ago
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    oops.. can*

  14. Michele_Laino
    • one year ago
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    please wait, we have to rewrite the second your inequality: \(2b+15<5\)

  15. anonymous
    • one year ago
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    Oh

  16. Michele_Laino
    • one year ago
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    If I subtract 15 to both sides I get: \(2b+15-15<5-15\) please simplify

  17. anonymous
    • one year ago
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    How would I simplify that?

  18. texaschic101
    • one year ago
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    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

  19. Michele_Laino
    • one year ago
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    what is: 15-15=...? and what is 5-15=...?

  20. anonymous
    • one year ago
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    0 and -10?

  21. Michele_Laino
    • one year ago
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    ok!

  22. anonymous
    • one year ago
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    :D

  23. anonymous
    • one year ago
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    what do you do with the 2b?

  24. Michele_Laino
    • one year ago
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    so we get: \(2b<-10\) now I divide both sides by 2, so I write this: \[\frac{{2b}}{2} < \frac{{ - 10}}{2}\]

  25. Michele_Laino
    • one year ago
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    what is 2/2=...? and what is -10/2=...?

  26. Michele_Laino
    • one year ago
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    hint: we get \(b<-5\)

  27. Michele_Laino
    • one year ago
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    so your set is represented by these inequalities: \(b>4\) \(or\) \(b<-5\)

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