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2 years ago

Charlotte owns two entertainment websites. Here are some details about those websites for one entire month:

Mathematics

2 answers:

sattari [20]2 years ago

7 0

Answer:

Part 1:

Revenue divided by number of posts

Revenue divided by total number of words

Part 2:

No. The definitions have opposite results.

Step-by-step explanation:

When you divide revenue by total number of words remember to do words*posts to get total.

Example: $30000/100*110 = 2.72

DedPeter [7]2 years ago

5 0

It is d and b I believe

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2 years ago

Determine whether the integral is convergent or divergent. [infinity] 7 e−1/x x2 dx convergent divergent Changed: Your submitted

inessss [21]

I suppose the integral could be

$\displaystyle\int_7^\infty\frac{e^{-1/x}}{x^2}\,\mathrm dx$

In that case, since $-\frac1x\to0$ as $x\to\infty$ , we know $e^{-1/x}\to1$ . We also have $\left(e^{-1/x}\right)'=\frac{e^{-1/x}}{x^2}>0$ , so the integral is approach +1 from below. This tells us that, by comparison,

$\displaystyle\frac{e^{-1/x}}{x^2}\le\frac1{x^2}\implies\int_7^\infty\frac{e^{-1/x}}{x^2}\,\mathrm dx\le\int_7^\infty\frac{\mathrm dx}{x^2}$

and the latter integral is convergent, so this integral must converge.

To find its value, let $u=-\frac1x$ , so that $\mathrm du=\frac{\mathrm dx}{x^2}$ . Then the integral is equal to

$\displaystyle\int_{-1/7}^0e^u\,\mathrm du=e^0-e^{-1/7}=1-\frac1{\sqrt[7]{e}}$

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3 years ago

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yan [13]

Answer:

Supplementary and Complementary

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2 years ago

Theo buys 5packages of paper there are 500 sheets of paper in each packege how many sheets of paper does theo buy

pochemuha

5×500=2500
theo buys 2500 sheets of paper

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