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erastovalidia [21]
3 years ago
5

A student has a daily reading productivity level of 1 chapter while in the computer lab, 5 chapters while at the coffee shop, an

d 8 chapters while at the library. If 1/12 of the day is spent at a computer lab, 1/4 at a coffee shop, and 2/3 at a library, what is the total daily reading productivity level of the student? Write the solution as a mixed number or a fraction in lowest terms.
Mathematics
1 answer:
lianna [129]3 years ago
3 0

Answer:

8000 is the answer hope I helped I'm prob wrong

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Ierofanga [76]
18 2/3

Explanation:
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A 26' long painting is how many yards?
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Find a power series representation for the function. (Give your power series representation centered at x = 0.) f(x) = x2/(x4 +
ella [17]

Answer:

Given the function:  f(x) =\frac{x^2}{x^4+16}

A geometric series is of the form of :

\sum_{n=0}^{\infty} ar^n

Now, rewrite the given function in the form of \frac{a}{1-r} so that we can express the representation as a geometric series.

\frac{x^2}{x^4+16}

Now, divide numerator and denominator by x^4 we get;

\frac{\frac{1}{x^2}}{1+\frac{16}{x^4}} = \frac{\frac{1}{x^2}}{1+(\frac{4}{x^2})^2}

Therefore, we now depend on the geometric series which is;

\frac{1}{1+x} =\sum_{n=0}^{\infty} (-1)^n x^n

let x \rightarrow x^2 then,

\frac{1}{1+x^2} =\sum_{n=0}^{\infty} (-1)^n x^{2n}

to get the power series let x \rightarrow \frac{4}{x^2}

so,

\frac{1}{1+(\frac{4}{x^2})^2} =\sum_{n=0}^{\infty} (-1)^n (\frac{4}{x^2})^{2n}

Multiply both side by \frac{1}{x^2} we get;

\frac{\frac{1}{x^2}}{1+(\frac{4}{x^2})^2} =\frac{1}{x^2} \cdot \sum_{n=0}^{\infty} (-1)^n (\frac{4}{x^2})^{2n}

or

\frac{\frac{1}{x^2}}{1+(\frac{4}{x^2})^2} =x^{-2} \cdot \sum_{n=0}^{\infty} (-1)^n (16)^n (x^{-2})^{2n}

or

\frac{\frac{1}{x^2}}{1+(\frac{4}{x^2})^2} =\sum_{n=0}^{\infty} (-1)^n (16)^n x^{-4n} \cdot x^{-2}

Using x^n \cdot x^m = x^{n+m}

we have,

\frac{\frac{1}{x^2}}{1+(\frac{4}{x^2})^2} =\sum_{n=0}^{\infty} (-1)^n (16)^n x^{-4n-2}

therefore, the power series representation centered at x =0 for the given function is: \sum_{n=0}^{\infty} (-1)^n (16)^n x^{-4n-2}







6 0
3 years ago
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Basile [38]

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Step-by-step explanation:

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the answer is
<span>the least amount of cardboard needed to make the cereal box is 292 in</span>²
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