Question

Help me with this problem please

Answer 1

can't read the whole equation, but whatever it is, set it equal to zero and solve for \(t\)

Answer 2

@satellite73 we have a problem please come its an emergency http://openstudy.com/study#/updates/529f9840e4b0d45cde218892

Answer 3

Question why 0?

Answer 4

h(t) = -16t2 + 16t + 5 that got cut off some

Answer 5

so
Multiply by -1,
16t² - 16t - 5 = 0
(4t - 5)(4t + 1) = 0
4t - 5 =0
t = 5/4 or 1 1/4

Answer 6

youi can ignore the negative

4t + 1 = 0
t = -1/4

Answer 7

h(t) = height at time t

when h(t) = 0, the height is zero (the ground).

you want to find the t at which h(t) = 0

Answer 8

i just solved it.

mult by -1 like above

and then factor
(4t - 5)(4t + 1) = 0
set both binomials to zero and solve

the answer was 1 1/4 or 1.25

Answer 9

Sorry back

Answer 10

Omy thank you for explaining :3