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

Question

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

anonymous · Answer

18,1.153253

anonymous · Answer

can someone please tell me how to solve for t? :(

anonymous · Answer

thank you for the answer but i have to show my work i just need to know what steps to take

amistre64 · Answer

what is your quadratic formula?

anonymous · Answer

h=-16t^2+vt+s

amistre64 · Answer

thats not a quadratic formula, that a quadratic equation ...

amistre64 · Answer

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 · Answer

ok but how do i solve? this

amistre64 · Answer

20 = -16t^2+30t+4

id first make it equal to 0, then define your values for a,b, and c

anonymous · Answer

ok but i have to find t i dont want the answer i just want to know how to do it myself

amistre64 · Answer

then work the process, make the equation equal to 0 to start with

anonymous · Answer

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

amistre64 · Answer

we could divide it all by 16 as well and get the same results :)  but thats just a side note

anonymous · Answer

ok thank you both for the help