Question

Sharice hit a baseball, and the flight of the ball was modeled by the following equation:
h = -16t2 + 62t + 4. After how many seconds will the ball fall to the ground if it is not caught? Round your answer to the nearest tenth.
A. 3.6 seconds
B. 3.7 seconds
C. 3.9 seconds
D. 3.8 seconds

Answer 1

you have to make h=0 and solve

Answer 2

how do i do that

Answer 3

-16t2 + 62t + 4=0 you know how to solve a quadratic equation?

Answer 4

whats that?

Answer 5

@kyusakazaki help me :(

Answer 6

the ball will hit the ground when h=0

Answer 7

so let's solve the equation

Answer 8

so what do i plug that into

Answer 9

simple quadratic dude :)

Answer 10

whats the quadratic formula again

Answer 11

you will get two answer :) positive and negative..then your time should positive ;)
3.9s

Answer 12

@pengembara_bumi1 good hint bro i was about to tell her that

Answer 13

@kyusakazaki : is it true ? hehe..thanks ;) u smart bro

Answer 14

also the ball won't hit the ground for twice it's not logic

Answer 15

so it is 3.9

Answer 16

@xo_ellaaavasquez you can use this formula to solve a quadtratic equation x = [ -b ± sqrt(b^2 - 4ac) ] / 2a

Answer 17

exactly ;) try use your calculator..hehe..or just use formula..

Answer 18

form of equation ax^2+bx+c=0

Answer 19

thanks

Answer 20

@xo_ellaaavasquez 3.9