Question

h(t)=-16t^2+175t+500
Please help solve for t

Answer 1

solve for t, when?

Answer 2

solve for t (time)

Answer 3

@sooobored please help

Answer 4

you mean write it as a function of t(h)?

Answer 5

well im trying to find t( the time it will take for a firework to launch and then land with ou exploding.

Answer 6

well thats a completely different question

Answer 7

you're trying to solve for when h(t)=0

or 0.0000000000000000000000000000000001
though 0 is close enough

Answer 8

oh well can u help

0

Answer 9

0= -16 t^2 +175t+500

and then you can use the quadratic formula to solve for the roots

Answer 10

\[t= \frac{-b \pm \sqrt{ b^2 -4ac}}{2a}\]
where
a=-16
b=175
c=500

Answer 11

and the negative t answer does not count as an answer

Answer 12

oh so what does the quadratic formula look like

Answer 13

the -b plus minus is the quadratic formula

Answer 14

do u know the answer for this problem, and can u explain how u got it?

Answer 15

by plugging in the values into the quadratic equation

Answer 16

can u type out the equation i should plug into

Answer 17

sorry, quadratic formula

Answer 18

i already did that above...

Answer 19

formula*

Answer 20

you said the b- ?

Answer 21

look the quadratic equation given is
h(t)=-16 t^2 +175 t +500

the generic quadratic equation is
y=ax^2 + bx +c

now, the quadratic formula is a formula that gives you the "roots" or x when y=0
and it has the form
\[x= \frac{-b \pm \sqrt{b^2 -4ac}}{2a}\]

now in the case of your problem
we want to find t (related to x) when h(t) (related to y) is equal to 0
which means we can use the quadratic formula

comparing the quadratic equations we get
a= -16
b= 175
c= 500

substitute those values into the quadratic formula and you will get 2 different answers

Answer 22

http://www.purplemath.com/modules/quadform.htm

Answer 23

look at that if you want examples of how to apply the quadratic formula

Answer 24

i dont get it as well as you do can u please tell the two answers and just show what u did to get that through changing equations

Answer 25

you didn't finish the problem idiot, u have no idea what your talking about your a fake, you have to factor it not do your formula crap!

Answer 26

This equation won.t factor so you need to use the formula that sooobored gave you.