Question

standard form?

Answer 1

\[\frac{ 2 }{ 2-15i }\]

Answer 2

whats i

Answer 3

an imaginary number ^.^

Answer 4

\[\frac{ 4 }{ 229 }+\frac{ 30i }{ 229 }\]

Answer 5

is that one of the answers

Answer 6

yessss

Answer 7

well there you go

Answer 8

any more

Answer 9

yes A projectile is thrown upward so that its distance above the ground after t seconds is h = - 16t2 + 480t.

After how many seconds does it reach its maximum height?

Answer 10

k give me a sec

Answer 11

y=−16t2+440t
y′=−32t+440=velocity
we know that the velocity of y is 0 at the point of max height so
0=−32t+440
−440=−32t
−440/−32=t
13.75 seconds

Answer 12

15 s

22.5 s

7 s

30 s

Answer 13

those are my choices .-.

Answer 14

hm let me try again sorry for that

Answer 15

Its A sorry for that

Answer 16

XD its okay i should have given you the options in the first place

Answer 17

Yea but its k :D

Answer 18

any more?