3 years ago

If a packet of cigarettes are $18.50 and you by four a week how much money will you spend over 3 years?

Mathematics

1 answer:

Greeley [361]3 years ago

4 0

The answer is B! :)

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Answer:

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Step-by-step explanation:

The time constant of the element X is:

$\tau = \frac{13\,min}{\ln 2}$

$\tau = 18.755\,min$

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$\frac{m}{m_{o}} = e^{-\frac{t}{\tau} }$

$t = -\tau \cdot \ln \frac{m}{m_{o}}$

$t = -(13\,min)\cdot \ln \left(\frac{11\,g}{530\,g} \right)$

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