Answer:
A
Step-by-step explanation:
The position of an atom moving inside a cathode ray tube is given by the function:
Where f(t) is in meters and <em>t</em> is in seconds.
And we want to determine its instantaneous velocity at <em>t</em> = 2.5 seconds.
The velocity function is the derivative of the position function. Thus, find the derivative of the function:
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Then the instantaneous velocity at <em>t</em> = 2.5 will be:
Our answer is A.
Answer:
<em>The percentage of the students who completed the poll preferred rock and roll music.</em>
<em>P(RR) = 0.1423 = 14.23 %</em>
Step-by-step explanation:
<u><em>Explanation</em></u>:-
<em>Given total number of students n(S) = 1960</em>
Given the Students at a high school were polled to determine the type of music they preferred.
Rap 916
Alternative 46
<em>Rock and Roll 279</em>
Country 183
Jazz 32
Other 89
<em>Let ' RR' be the event of Rock and Roll preferred music</em>
<em>given </em>Rock and Roll = 279
<em>n( RR) = 279</em>
<em>The percentage of the students who completed the poll preferred rock and roll music.</em>
<em></em><em></em>
<em>P(RR) = 0.1423 = 14.23 %</em>
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