Answer:

Step-by-step explanation:
Given


Required

This is calculated as the number of women divided by the population of the class
i.e.

So, we have:


4x = 157.2
4x/4 = 157.2/4
x = 39.3
For the first question the answer is (2,2) and for the second question the answer is (0,4)
I think it C
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The solution for the given differential equation is lnlxl = 
Given,

Here,
x = vy, dx = vdy + ydv
y = ux, dy = udx + xdu
Then,

Now,

l
l
l
l
l
l
y = ux
u = 
That is l
l
l 
Learn more about differential equation here: brainly.com/question/21852102
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