Question

PLZ HELP, will MEDAL???

Answer 1

@jigglypuff314 @Jaynator495 @zepdrix

Answer 2

for the first question, you can plug in 168 for d
then solve for t (and use the positive answer, since you can't have negative time)

Answer 3

plug 168 for d?
d = 16t^2

Answer 4

yup :)
so
168 = 16t^2
solve for t

Answer 5

im not sure.

Answer 6

well you would divide both sides by 16 first

Answer 7

so... 168 / 16 & 16 / 16 ?

Answer 8

yes
so you get
168/16 = t^2

because 16/16 = 1
and 1*t^2 = t^2

Answer 9

168/16=10.5
16/16=1

Answer 10

that's right
so
t^2 = 10.5
then we need to squareroot both sides

Answer 11

the other way round
t*t = 10.5
t^2 = 10.5

"take the square root" of both sides

Answer 12

so 10.5 is not my final answer?

Answer 13

I still need help with the other questions too

Answer 14

10.5 is not the answer
t*t is 10.5
you want just t
you should do
\[ \sqrt{t^2} = \sqrt{10.5} \\ t= 3.24037\]
which you can round to about 3.2 seconds

Answer 15

ohhh