cgold1
Nov 28, 2008, 08:48 PM
This college algebra class is kciking my butt. I am trying to solve an application problem which wants to know how high a rocket will travel at t seconds using
s(t)=-16t^2+96t=32 ft
Here is how I tried to solve it:
= 16(-t^2+6t+2)
= 16(-6+/-sqt 6^2-4*-1*2 ) / 2*-1
= 16(-6 +/- sqt 36-(-8) )/-2
= 16(-6 +/- sqt 44) /-2
= 16(-6 +/- 2 sqt 11) / -2
= 2*16(-3 +/- sqt 11) / -2
= 32(-3 +/- sqt 11) / -2
= -16(-3 +/- sqt 11)
I came up with -16 (-3+/-sqt 11)
Please point me in the right direction... Thank you in advance
s(t)=-16t^2+96t=32 ft
Here is how I tried to solve it:
= 16(-t^2+6t+2)
= 16(-6+/-sqt 6^2-4*-1*2 ) / 2*-1
= 16(-6 +/- sqt 36-(-8) )/-2
= 16(-6 +/- sqt 44) /-2
= 16(-6 +/- 2 sqt 11) / -2
= 2*16(-3 +/- sqt 11) / -2
= 32(-3 +/- sqt 11) / -2
= -16(-3 +/- sqt 11)
I came up with -16 (-3+/-sqt 11)
Please point me in the right direction... Thank you in advance