In how many ways can you combine 5 different shoes and 8 different socks?

Mathematics

2 answers:

77julia77 [94]3 years ago

7 0

30 I think but I'm not sure if I'm right

Reptile [31]3 years ago

4 0

Just multiply the shoes and socks together
so your answer is 40

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$\frac{1}{x} +\frac{1}{y} = 5\\\\x^{-1}+y^{-1}=5\\$

Above, I changed the fraction form of x and y into exponential form so it is easier to see the differentiation. Now, we can differentiate:

$-1x^{-2}+-1y^{-2}\frac{dy}{dx}=5\\\\\frac{-1}{x^2}-\frac{1}{y^2}\frac{dy}{dx}=5\\\\-\frac{1}{y^2}\frac{dy}{dx}=5+\frac{1}{x^2}\\\\\frac{dy}{dx}=-5y^2-\frac{y^2}{x^2}$

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