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anonymous

  • 5 years ago

Based on the best-fit quadratic model at what time T will the height of the object be approximately 30 meters? A.) 5.6 seconds B.) 5.5seconds C.)6.0 seconds D.)5.4 seconds *sn the picture is there when you click on the problem. please help thanks :)36 minutes ago

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  1. anonymous
    • 5 years ago
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  2. anonymous
    • 5 years ago
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    height = at^2+bt+c. substitute any three values of height and t to find a,b,c. and then use those values to find out t for height = 30 meters

  3. anonymous
    • 5 years ago
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    so would it be C

  4. anonymous
    • 5 years ago
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    wait, this is best fitting. hmmm. I think you have to follow a different procedure for this.

  5. anonymous
    • 5 years ago
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    so what would it be?

  6. anonymous
    • 5 years ago
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    have you done derivatives?

  7. anonymous
    • 5 years ago
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    no idk how sorry

  8. anonymous
    • 5 years ago
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    Have you done curve fitting?

  9. anonymous
    • 5 years ago
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    no

  10. anonymous
    • 5 years ago
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    no

  11. anonymous
    • 5 years ago
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    If you havent, then the best thing would be to use the method I described. use t = 0 , 2 ,4

  12. anonymous
    • 5 years ago
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    okay so its B

  13. anonymous
    • 5 years ago
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    are you getting different values of a,b,c if you are choosing different heights and t?

  14. anonymous
    • 5 years ago
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    i really dont understand

  15. anonymous
    • 5 years ago
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    http://www.youtube.com/watch?v=z_hEVWSkQHo see that video. It explains it well. You can do the problem just like he explains it.

  16. anonymous
    • 5 years ago
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    okay my friend just told me it was A?

  17. anonymous
    • 5 years ago
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    and thanks for the video:)

  18. anonymous
    • 5 years ago
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    you are welcome.

  19. anonymous
    • 5 years ago
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    but is it A?

  20. anonymous
    • 5 years ago
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    I don't know. you have to use your calculator.

  21. anonymous
    • 5 years ago
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    see the video for more information;

  22. anonymous
    • 5 years ago
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    okay

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spraguer (Moderator)
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