What are the solutions of the equation: x^2 + 14x = -130 ?
a) 2, -16
b) 10, -13
c) -2, 16
d) no solution (~~ MY ANSWER d. ~~)
4 answers
correct
Yay! Thanks!
A rocket is launched from atop a 105-foot cliff with an initial velocity of 156ft/s. the height of the rocket above the ground at time t is given by
h= -16t^2 + 156t + 105. When will the
rocket hit the ground after it is launched? Round to the nearest second.
(My answer is 10.4 s ??)
h= -16t^2 + 156t + 105. When will the
rocket hit the ground after it is launched? Round to the nearest second.
(My answer is 10.4 s ??)
LOL
no need to ask, plug back in
h = -16(10.4)^2 + 156(10.4) +105
= -1730.56 + 1622.4 + 105
= -1730.56 + 1727.4
close enough to the ground :)
no need to ask, plug back in
h = -16(10.4)^2 + 156(10.4) +105
= -1730.56 + 1622.4 + 105
= -1730.56 + 1727.4
close enough to the ground :)