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Papessa [141]
3 years ago
11

A ball is thrown from an initial height of 2 feet with an initial upward velocity of 18/fts . The ball's height h (in feet) afte

r t seconds is given by the following. =h+2−18t16t^2 Find all values of t for which the ball's height is 6 feet. Round your answer(s) to the nearest hundredth.
PLEASE SOMEONE HELP
Mathematics
1 answer:
inna [77]3 years ago
4 0
Hello! First insert 6 where the h is located. So we have an equation that looks like the following. 6 = 2 - 18t + 16t^2

Although you could leave the equation in its original form, I am going to switch it around.
6 = 2 - 18t + 16t^2
16t^2 - 18t + 2 = 6
Move the 6 to the other side and do the math
16t^2 - 18t + 2 - 6 = 6 - 6
16t^2 - 18t -4 = 0
Factor and after factoring your T will be as follows
t = \frac{9}{16} - \frac{\sqrt{145}}{16} = -0.1900
t = \frac{9}{16} + \frac{\sqrt{145}}{16} = 1.315

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