3 years ago

- Find two decimals that are equivalent to

Mathematics

2 answers:

AVprozaik [17]3 years ago

5 0

Answer:

739.99 and 739.9

If you want the numbers then

39.99 and 699.99

den301095 [7]3 years ago

5 0

Answer:

We have to find two decimals that are equivalent to

$(4\times10)+(7\times100)$

= $40+700$

= 740

Now the two decimals that are equivalent to this can be many. Like -

$40.0+700.0$

= 740.0

or $(0.4\times100)+(0.7\times1000)$

= 40+700

= 740

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The new iPhone 3.14 is being sold at the UT Math Department. The original price is $1200 (day 0), but they are going to decrease

Marat540 [252]

$\bf \qquad \textit{Amount for Exponential Decay} \\\\ A=P(1 - r)^t\qquad \begin{cases} A=\textit{accumulated amount}\dotfill&50.14\\ P=\textit{initial amount}\dotfill &1200\\ r=rate\to r\%\to \frac{r}{100}\dotfill\\ t=\textit{elapsed time}\dotfill &16\\ \end{cases}$

$\bf 50.14=1200(1-r)^{16}\implies \cfrac{50.14}{1200}=(1-r)^{16}\implies \sqrt[16]{\cfrac{50.14}{1200}}=1-r \\\\\\ r=1-\sqrt[16]{\cfrac{50.14}{1200}}\implies r\approx 0.18\implies \stackrel{\textit{converting to percent}}{r\approx 0.18\cdot 100}\implies r\approx \stackrel{\%}{18}\quad \leftarrow x$