Answer: [A]: "mean" .
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Usually, the "standard deviation from the mean" is the "average" of concern.
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Figure A which has two rays connected at a vertex is an angle in this scenario.
<h3>What is an Angle?</h3>
This is formed when two rays share a common endpoint with there being different types of angles.
The common endpoint shared forms a vertex which is why Figure A was chosen as the most appropriate choice.
Read more about Angle here brainly.com/question/25770607
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Your first and second derivatives which are the velocity and the acceleration respectively are correct.
The particle has reverses direction when v(t) ≤ 0 so at interval 2 < t < 5 sec.
You can substitute now t = 2 for s(2) and a(2) for first changing direction. Also t = 5 for s(5) and a(5) for second changing direction.
I think it’s C but don’t go for my word bc I could be wrong but I rlly think it C for some reason
Step-by-step explanation:
Distance = Speed x Time
Given Distance = 40km/h or kph
Time = 5 hours 15 minutes
=
Distance Travelled = 40 kph x 5.25 hours
= 210km
