Question

MEDAL IF HELPED

If a baseball player hits a baseball from 4 feet off the ground with an initial velocity of 64 feet per second, how long will it take the baseball to hit the ground? Use the equation h = -16t2 + 64t + 4.

A. 2 plus or minus square root of 17 end root over 2

B. quantity of 2 plus or minus square root of 17 all over 2

C. 2 plus or minus 4 square root of 17

D. quantity of 16 plus or minus square root of 17 all over 2

Answer 1

PLZ SHOW WORK!!

Answer 2

put h = 0.. and solve

Answer 3

thats it?

Answer 4

its C

Answer 5

what i thought but how?

Answer 6

i need to compare work

Answer 7

ans is .. a

Answer 8

wait posting the work

Answer 9

thanks

Answer 10

ahhh i messed up at a step thx zoo much
i see where i went wrong

Answer 11

so*

Answer 12

need more help?