Pls help pls 25 points pls
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Mathematics, 21.06.2019 19:30
The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)
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Mathematics, 21.06.2019 20:00
Aconstruction worker has rope 9 m long he needs to cut it in pieces that are each 3 /5 m long how many such pieces can he cut without having any rope leftover?
Answers: 3
Mathematics, 21.06.2019 20:30
What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)
Answers: 2
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