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nika2105 [10]
3 years ago
7

There is a flu outbreak at your school that starts with 10 people. The number of ill students increases by 20% each hour. Write

an exponential function to represent the total number of ill
students, f(x), where x is the number of hours after the outbreak.
a. f(x) = 10(1.2)x
b. f(x) - 1.2(10)
c. f(x) = 10(20)
d. None of the above.
Mathematics
1 answer:
ryzh [129]3 years ago
6 0

Answer:

c

Step-by-step explanation:

f(x) =10 (20)=200

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Answer: R=20.84\ lb\quad 22.57^{\circ},15.43^{\circ}

Step-by-step explanation:

Given

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The resultant of the two forces is given by

\Rightarrow R=\sqrt{a^2+b^2+2ab\cos \theta}

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\Rightarrow R=\sqrt{9^2+13^2+2(9)(13)\cos 38^{\circ}}\\\Rightarrow R=\sqrt{81+169+184.394}\\\Rightarrow R=\sqrt{434.394}\\\Rightarrow R=20.84\ lb

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\Rightarrow \alpha=\tan^{-1}\left( \dfrac{b\sin \theta}{a+b\cos \theta}\right)\\\\\text{Considering 9 lb force along the x-axis}\\\\\Rightarrow \alpha =\tan^{-1}\left( \dfrac{13\sin 38^{\circ}}{9+13\cos 38^{\circ}}\right)\\\\\Rightarrow \alpha =\tan^{-1}(\dfrac{8}{19.244})\\\\\Rightarrow \alpha=22.57^{\circ}

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