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alexgriva [62]
3 years ago
8

There are 80 people in Ms. Peterson's classes. One-fourth of the students are going on a field trip. Of those students, one-half

are bringing their lunch. How many students are going on the field trip and bringing their lunch?
A. 10 students
B. 20 students
C. 30 Students
D. 15 Students
Mathematics
1 answer:
Naily [24]3 years ago
3 0
20 students are going to the trip and of those 20, 10 are bringing their own lunches
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Convert 6 feet into meters. round to the nearest tenth
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dimulka [17.4K]

we have the function

E=\sin \frac{\pi}{14}t

Part a

For t=7

substitute in the given function

\begin{gathered} E=\sin \frac{\pi}{14}7 \\ E=1 \end{gathered}

For t=14

\begin{gathered} E=\sin \frac{\pi}{14}14 \\ E=0 \end{gathered}

For t=21

\begin{gathered} E=\sin \frac{\pi}{14}21 \\ E=-1 \end{gathered}

For t=28

\begin{gathered} E=\sin \frac{\pi}{14}28 \\ E=0 \end{gathered}

For t=35

\begin{gathered} E=\sin \frac{\pi}{14}35 \\ E=1 \end{gathered}

Observation: The values of E varies from -1 to 1, including the zero

Part B

Remember that

The Period goes from one peak to the next

so

Period=2pi/B

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<h2>the period is 28 days</h2>
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