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Bookworm14

  • one year ago

Compound Inequalities ~HELP! I am just getting back in school, so my brain is still warming up. I got z>/=2 OR z<2 ,but this is not an option... Help Plz?

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  1. Bookworm14
    • one year ago
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  2. Bookworm14
    • one year ago
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    that is what I thought, but if i pick the wrong one, i have to start my streak over again! (its khan academy using it for my math reviews)

  3. anonymous
    • one year ago
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    U just got Back in and they are already doing this lol

  4. jim_thompson5910
    • one year ago
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    You should get z >= 2 OR z < 2. That is correct. But there's more to the story. Draw out a number line with 2 on the number line |dw:1439333738245:dw|

  5. jim_thompson5910
    • one year ago
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    z >= 2 has this graph |dw:1439333760533:dw|

  6. jim_thompson5910
    • one year ago
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    |dw:1439333804945:dw|

  7. jim_thompson5910
    • one year ago
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    and z < 2 has this graph |dw:1439333817091:dw|

  8. jim_thompson5910
    • one year ago
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    now imagine overlaying or combining the two graphs to form one big graph when we say "z >= 2 OR z < 2" we can pick either graph which allows us to combine them into one graph that combined graph is this |dw:1439333883509:dw| notice how I simply shifted the "z < 2" graph upward

  9. jim_thompson5910
    • one year ago
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    at this point, hopefully you see what the answer is?

  10. Bookworm14
    • one year ago
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    oh, so is it all real numbers? @jim_thompson5910 sorry for the late response i was cooking dinner :P

  11. jim_thompson5910
    • one year ago
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    that's ok and yes, the combined graphs make the set of all real numbers

  12. Bookworm14
    • one year ago
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    @isaac4321 , yep welcome to highschool buddy! lol Oh thank you so much, i am exhausted so my brain is just sort of tired right now, thank you! ~ Bree @jim_thompson5910

  13. jim_thompson5910
    • one year ago
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    you're welcome

  14. anonymous
    • one year ago
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    I'm in tenth so :p

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