3 years ago

Help me :) im giving brainiest

Mathematics

2 answers:

bagirrra123 [75]3 years ago

8 0

Hey there! Your answer is:

-1/4 or -0.25

I really hope this helps you out. Have a really nice day!

skad [1K]3 years ago

7 0

Answer:

I think it 0.25=1/4

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Step-by-step explanation:

I think the missing equation in your question is: h(t) = -16 $t^{2}$ + 16t + 480

Here is my answer:

As we know that the vertex form of a parabola, y=a $(x-h)^{2}$ + k where(h,k) is the vertex

h(t) = -16 $t^{2}$ + 16t + 480

= -16 ( $t^{2} -t)$ + 480

= -16 $(t-\frac{1}{2}) ^{2}$ + 484

So the vertex is ( $\frac{1}{2}$ , 484)

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b. The highest point that Joseph reached is the vertex of the function, it is 484 ft

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<=> h(t) = 0

<=> -16 $t^{2}$ + 16t + 480 = 0

<=> t = $\frac{192}{32}$ second = 6 sec

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