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anonymous

  • one year ago

ok doing the quadratic formula i need to know how to solve for t 20=-16t^2+30t+4 don't want the answer just want to know how to solve

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  1. anonymous
    • one year ago
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    18,1.153253

  2. anonymous
    • one year ago
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    can someone please tell me how to solve for t? :(

  3. anonymous
    • one year ago
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    thank you for the answer but i have to show my work i just need to know what steps to take

  4. amistre64
    • one year ago
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    what is your quadratic formula?

  5. anonymous
    • one year ago
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    h=-16t^2+vt+s

  6. amistre64
    • one year ago
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    thats not a quadratic formula, that a quadratic equation ...

  7. amistre64
    • one year ago
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    given the quadratic equation: ax^2 + bx + c = 0 the roots of the equation, the solution for the x values are: \[x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\]

  8. anonymous
    • one year ago
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    ok but how do i solve? this

  9. amistre64
    • one year ago
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    20 = -16t^2+30t+4 id first make it equal to 0, then define your values for a,b, and c

  10. anonymous
    • one year ago
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    ok but i have to find t i dont want the answer i just want to know how to do it myself

  11. amistre64
    • one year ago
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    then work the process, make the equation equal to 0 to start with

  12. anonymous
    • one year ago
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    -16t^2+30t+(4-20)=0 A = -16 B = 30 C= -16 plug into formula shown above and solve.

  13. amistre64
    • one year ago
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    we could divide it all by 16 as well and get the same results :) but thats just a side note

  14. anonymous
    • one year ago
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    ok thank you both for the help

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