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stiks02 [169]
3 years ago
10

A construction crew is lengthening a road. The road started with a length of 58 miles, and the crew is adding 2 miles to the roa

d each day. Let L represent the total length of the road (in miles), and let D represent the number of days the crew has worked. Write an equation relating L to D . Then use this equation to find the total length of the road after the crew has worked 39 days.
Mathematics
1 answer:
Anestetic [448]3 years ago
7 0
39 x 2 = 78 Miles 
58 + 78 = 136

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Answer:

Step-by-step explanation:

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A hemisphere has an area of 256 pi cm^2. What is its volume?
Amanda [17]
\bf \begin{array}{llll}
\textit{surface area of a sphere}\\\\
A=4\pi r^2
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\textit{a hemisphere is half that}\\\\
A=\cfrac{4\pi r^2}{2}\implies A=2\pi r^2
\end{array}\qquad r=radius
\\\\\\
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\\\\\\
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\\\\
-----------------------------\\\\

\bf \textit{volume of a sphere}\\\\
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\textit{a hemisphere is half that}\\\\
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\\\\\\
V=\cfrac{2\pi r^3}{3}
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\textit{now, we know the radius is }8\sqrt{2}\implies V=\cfrac{2\pi (8\sqrt{2})^3}{3}
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V=\cfrac{2\pi (8^3\sqrt{2^3})}{3}\implies V=\cfrac{2\pi \cdot 512\cdot 2\sqrt{2}}{3}
\\\\\\
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Answer:

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