Mathematics, 31.07.2019 05:50 CoolDudeTrist
Samantha threw an apple out of the tenth floor of her apartment building. the equation y=-16t^2+120 can be used to represent the fruits height above the ground, where t represents time in seconds after she threw the apple. how long did it takr the apple to hit the ground? round to the nearest hundredth.
Answers: 1
can be used to represent the fruits height above the ground, where t represents time in seconds after she threw the apple.![-16t^2+120=0\\\Rightarrow16t^2=120\\\Rightarrow\ t^2=7.5\\\Rightarrow\ t=\pm\sqrt{7.5}\\\Rightarrow\ t=2.73861278753\approx2.74....\text{[Time is cannot be negative.]}](/tpl/images/0153/2739/99159.png)
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Samantha threw an apple out of the tenth floor of her apartment building. the equation y=-16t^2+120...
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