anonymous
  • anonymous
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
Mathematics
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
18,1.153253
anonymous
  • anonymous
can someone please tell me how to solve for t? :(
anonymous
  • anonymous
thank you for the answer but i have to show my work i just need to know what steps to take

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More answers

amistre64
  • amistre64
what is your quadratic formula?
anonymous
  • anonymous
h=-16t^2+vt+s
amistre64
  • amistre64
thats not a quadratic formula, that a quadratic equation ...
amistre64
  • amistre64
given the quadratic equation: ax^2 + bx + c = 0 the roots of the equation, the solution for the x values are: \[x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\]
anonymous
  • anonymous
ok but how do i solve? this
amistre64
  • amistre64
20 = -16t^2+30t+4 id first make it equal to 0, then define your values for a,b, and c
anonymous
  • anonymous
ok but i have to find t i dont want the answer i just want to know how to do it myself
amistre64
  • amistre64
then work the process, make the equation equal to 0 to start with
anonymous
  • anonymous
-16t^2+30t+(4-20)=0 A = -16 B = 30 C= -16 plug into formula shown above and solve.
amistre64
  • amistre64
we could divide it all by 16 as well and get the same results :) but thats just a side note
anonymous
  • anonymous
ok thank you both for the help

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