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mote1985 [20]
3 years ago
5

During the past school year, there were 640 students and 52 teachers. What is the ratio of students to each teacher rounded to t

he nearest tenth?
a.
12.3:1
c.
160:13
b.
1:12.3
d.
13:160


Please select the best answer from the choices provided

A
B
C
D
Mathematics
1 answer:
Arisa [49]3 years ago
4 0

Answer:

The ratio of student to teacher is 12.3 to 1

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If there is such a scalar function <em>f</em>, then

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Integrate both sides of the first equation with respect to <em>x</em> :

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Differentiate both sides with respect to <em>y</em> :

\dfrac{\partial f}{\partial y}=8xy+4e^{4z}=8xy+\dfrac{\partial g}{\partial y}

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Integrate both sides with respect to <em>y</em> :

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Plug this into the equation above with <em>f</em> , then differentiate both sides with respect to <em>z</em> :

f(x,y,z)=4xy^2+4ye^{4z}+h(z)

\dfrac{\partial f}{\partial z}=16ye^{4z}=16ye^{4z}+\dfrac{\mathrm dh}{\mathrm dz}

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So we end up with

\boxed{f(x,y,z)=4xy^2+4ye^{4z}+C}

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