Question

h=-16t^2+176t+1280

Answer 1

what do you do? Factor?

Answer 2

I can see from the above equation that :
\(\cfrac{h}{16} = \cfrac{-16t^2 + 176t + 1280}{16} \)
would be the first step as reducing it makes factorization easy!

Answer 3

n the question say a rockeyi s fired upward from some intital distance. its height in feet, h above the ground t seconds after it is fired is given by h=-16t^2+176t+1280

Answer 4

What you need to do? Find t ? or h? or something else?

Answer 5

what is the rocket max height (feet) and how long it take to reach hte max height (time)

Answer 6

Heck, you don't even have to factor this thing. Just find the vertex of the parabola by using the form t=-b/2a to find the time, substitute the time back into the equation to find your max height. b is the coefficient of your first power term, and a is the coefficieent of your 2nd power term.

Answer 7

dh/dt = 0 , find t , substitute that t in h to find max. height.

Answer 8

May not be in calculus, so using algebra is safe.

Answer 9

so ans. h=1764 at t=5.5

Answer 10

ok then vertex method is for you.

Answer 11

I like using that method for finding the vertex anyway. I use it all the time with my students in class.

Answer 12

what does d and h mean

Answer 13

Don't worry about it, cc, it only applies to you if you are in a caculus class.

Answer 14

oops...calculus too.

Answer 15

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