The height of a cannonball, h, in meters, over time, t, in seconds, as it is shot off a platform can be modelled by the equation ℎ = −4(t + 2)(t − 8). h= 100m t= 8 secs When did the cannonball reach its maximum height? What was the maximum height?

The height of a cannonball, h, in meters, over time, t, in seconds, as it is shot off a platform can be modelled by the equation ℎ = −4(t + 2)(t − 8). h= 100m t= 8 secs When did the cannonball reach its maximum height? What was the maximum height?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter9: Quadratic Functions And Equations

Section9.6: Solving Quadratic Equations By Using The Quadratic Formula

Problem 15CYU

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Question

The height of a cannonball, h, in meters, over time, t, in seconds, as it is shot off a platform can be modelled
by the equation ℎ = −4(t + 2)(t − 8).

h= 100m

t= 8 secs

When did the cannonball reach its maximum height? What was the maximum height?

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