A softball is thrown up into the air. The ball's height in feet is modeled by the equation h(t) = -16t2 + 32t + 5.
h = height
t = time in seconds
Find the maximum height of the ball

Question

A softball is thrown up into the air. The ball's height in feet is modeled by the equation h(t) = -16t2 + 32t + 5.
h = height
t = time in seconds
Find the maximum height of the ball

zale101 · Answer

what can you tell from this equation. Does it go upward or downward?

anonymous · Answer

up

zale101 · Answer

why?

zale101 · Answer

i see a negative sign, so the parabola has to open downward
-16t2 + 32t + 5

anonymous · Answer

oh yea i didnt see that

zale101 · Answer

first step, set the equation into the standard form: 
y=-a(x-h)^2+k, 
where (h,k) = (x,y) which is the vertex coordinates

zale101 · Answer

and that is by completing the square

zale101 · Answer

we already know that the equation opens downwards because the equation has -a which is -16 but we need to find its vertex by changing the equation into the vertex standard form

anonymous · Answer

how you know whats x and y

zale101 · Answer

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