3 years ago

How much more popcorn does the bigger box hold than the smaller box? cm^3

Mathematics

1 answer:

VashaNatasha [74]3 years ago

5 0

9514 1404 393

Answer:

70 cm³

Step-by-step explanation:

Amanda's container holds ...

V = LWH = (10 cm)(10 cm)(13.5 cm) = 1350 cm³

Mary's container holds ...

(8 cm)(8 cm)(20 cm) = 1280 cm³

The larger box holds 1350 -1280 = 70 cm³ more popcorn.

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Sodium-24 has an hourly decay rate of about 5%. How many grams of a 900 g sample will remain after 90 hours? Round the answer to

Yuki888 [10]

$\bf \qquad \textit{Amount for Exponential change}\\\\
A=P(1\pm r)^t\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{starting amount}\to &900\\
r=rate\to 5\%\to \frac{5}{100}\to &0.05\\
t=\textit{elapsed period}\to &90\\
\end{cases}
\\\\\\
A=900(1-0.05)^{90}$