Asked by T
A baseball is hit from a height of 0.8 m. After “t” seconds, its height “h”, in metres, is given by the equation h = -5t2 + 20t + 0.8. How long does the ball stay at least 15 m above the ground?
What would be the LET statement?
What would be the LET statement?
Answers
Answered by
Reiny
Let
-5t2 + 20t + 0.8 > 15
5t^2 - 20t + 14.2 < 0
You know that y = 5t^2 - 20t + 14.2 is a parabola opening upwards
find the roots of 5t^2 - 20t + 14.2 = 0 , and the time will be the time between those two roots
-5t2 + 20t + 0.8 > 15
5t^2 - 20t + 14.2 < 0
You know that y = 5t^2 - 20t + 14.2 is a parabola opening upwards
find the roots of 5t^2 - 20t + 14.2 = 0 , and the time will be the time between those two roots
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.