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zysi [14]
2 years ago
15

Challenge An arts academy requires there to be 5 teachers for every 115 students and 3 tutors for

Mathematics
1 answer:
Juli2301 [7.4K]2 years ago
7 0

Step-by-step explanation:

<u>5 teachers for every 115 students </u>

  • 1 teacher for every 115/5 = 23 students

<u>3 tutors for every 27 students</u>

  • 1 tutor for every 27/3 = 9 students

<u>If there are 90 students, then number of tutors:</u>

  • 90/9 = 10 tutors
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1. Graph the function f(x)=4cos(x). (Be sure to label your x-axis.)
Mekhanik [1.2K]

ANSWER

To graph the function


y=4cos(x) we need to plot some few points within one period. Since the interval is not given, we shall use [0,2 \pi]'


\left \begin{array}{cc}x&y=4cos(x)\\0 &4\\\frac{\pi}{2}&0 \\ \pi&-4\\\frac{3\pi}{2} &0\\2\pi&4\end{array}\right.


We plot the above points to obtain the graph as shown in the attachment.



6 0
4 years ago
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