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anonymous

  • 4 years ago

a toy rocket is pumped full of air and released upward. Its height can be approximated using the relation H=-7t squared + 42t + 49 where h is the height above ground in metres and t is the time in seconds

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  1. anonymous
    • 4 years ago
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    whats the question here singh?

  2. anonymous
    • 4 years ago
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    your gonna awnser it

  3. anonymous
    • 4 years ago
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    a toy rocket is pumped full of air and released upward. Its height can be approximated using the relation H=-7t squared + 42t + 49 where h is the height above ground in metres and t is the time in seconds

  4. anonymous
    • 4 years ago
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    H=-7t^2 + 42t + 49 H=0, When -7t^2 + 42t + 49=0, t=7sec and t=-1sec so after 7 sec the toy rocket is in the ground

  5. anonymous
    • 4 years ago
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    how long after the launch did the rocket hit the ground explain

  6. anonymous
    • 4 years ago
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    after t=7sec the rocket hits the ground

  7. anonymous
    • 4 years ago
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    what time has passed when the rocket has reached its highest point

  8. anonymous
    • 4 years ago
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    H=-7t^2 + 42t + 4=0, that is solving for t in sec

  9. anonymous
    • 4 years ago
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    may i know if you are in the calculus class or algebra?

  10. anonymous
    • 4 years ago
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    algebra

  11. anonymous
    • 4 years ago
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    ya so whats the awnser

  12. anonymous
    • 4 years ago
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    what time has passed when the rocket has reached its highest point

  13. anonymous
    • 4 years ago
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    ok... from H=-7t^2 + 42t + 49, this is a quadratic equation and a=-17,b=42 and c=49... the velocity equation is V=2ax+b=2(-7)t+42=-14t+42 now at max height V=0=-14t+42 we get t=3sec that is when the rocket reached its max height and the max height H=-7(3)^2 +42(3)+49=112 metres answer

  14. anonymous
    • 4 years ago
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    any question?

  15. anonymous
    • 4 years ago
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    Explain what happens to the graph of the exponential relation 2^x to the right of the y axis?

  16. anonymous
    • 4 years ago
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    meant to say 2 to the power of x

  17. anonymous
    • 4 years ago
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    ?

  18. anonymous
    • 4 years ago
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    are u there

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