Which dog food bag deal has the best price per pound?

Mathematics

2 answers:

gogolik [260]2 years ago

8 0

The answer would be $14.29 for 15lb
Hope that helped!
:)

Gnoma [55]2 years ago

8 0

I believe the answer is $12.25 for 13lbs because it is 0.94 cents per pound. $14.29 = 0.95, $24.25 = 0.97, $9.90 = 0.99.

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Reptile [31]

Answer:

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Step-by-step explanation:

The glacier moves 29.9 meters a day.

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In 1000 days it will move 29.9(1000)=29900 meters.

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Flauer [41]

$\bf \begin{cases}
r=\textit{rate of the plane}\\
w=\textit{rate of the wind}\\
\end{cases}
\\\\

\begin{array}{ccccllll}
&distance&rate&time(hrs)\\
&\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\\
\textit{with wind}&630&r+w&1\frac{1}{2}\\
\textit{against wind}&1120&r-w&4
\end{array}
$

$\bf thus \begin{cases}
630=(r+w)1\frac{1}{2}\to 630=(r+w)\frac{3}{2}
\\\\
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--------------\\
630=(r+w)\frac{3}{2}\implies 630\cdot \frac{2}{3}=r+w\\
420=r+w\implies \boxed{420-w}=r\\
--------------\\
thus\\
--------------\\
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\\\\
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\end{cases}
$

solve for "w", to find the wind's speed rate,

so hmmm what's the plane's rate? well 420 - w = r :)

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