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babunello [35]
3 years ago
11

According to the lecture, a valedictory speech should last approximately ________ minutes.

Mathematics
1 answer:
fiasKO [112]3 years ago
6 0
<span>According to the lecture, a valedictory speech should last approximately 15 minutes. </span>
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The water level of a certain body of water is changing at a rate of W(t)=3/4cos(4-t/2) inches per hour, where t represents hours
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Answer:

The answer is below

Step-by-step explanation:

a) The integral \int\limits^{10}_{1 } {W(t)} \, dt means the total change in level of water in inches from 1 am to 10 am. That is the water level change measured in inches between 1 am and 10 am

b) 7 pm is represented as t = 19 hours, while midnight is represented as t = 24 hours, hence the water level change between 7 pm and midnight is:

\int\limits^{24}_{19 } {W(t)} \, dt\\\\

c) Using casio calculator to evaluate the integral gives:

\int\limits^{24}_{19 } {W(t)} \, dt\\\\ = 2.54 inches

D) The total daily change in water level = \int\limits^{24}_{0 } {W(t)} \, dt\\\\ = 0.35 inches

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a is 60 b is 48

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6 qts equals ? pints 8 qts equals ? gallons and 48 fl oz equals ? cups
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