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kipiarov [429]
3 years ago
10

Please correct answer

Mathematics
1 answer:
erica [24]3 years ago
3 0

Answer:

your right good job

Step-by-step explanation:

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It’s blurry I can barely see it.
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2 years ago
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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
\\\\\\
\textit{a hemisphere is half that}\\\\
A=\cfrac{4\pi r^2}{2}\implies A=2\pi r^2
\end{array}\qquad r=radius
\\\\\\
\textit{now, we know the area is }256\pi \implies 256\pi =2\pi r^2
\\\\\\
\cfrac{256\pi }{2\pi }=r^2\implies \sqrt{128}=r\implies \boxed{8\sqrt{2}=r}
\\\\
-----------------------------\\\\

\bf \textit{volume of a sphere}\\\\
V=\cfrac{4}{3}\pi r^3\qquad r=radius
\\\\\\
\textit{a hemisphere is half that}\\\\
V=\cfrac{\frac{4}{3}\pi r^3}{2}\implies V=\cfrac{\frac{4\pi r^3}{3}}{\frac{2}{1}}\implies V=\cfrac{4\pi r^3}{3}\cdot \cfrac{1}{2}
\\\\\\
V=\cfrac{2\pi r^3}{3}
\\\\\\
\textit{now, we know the radius is }8\sqrt{2}\implies V=\cfrac{2\pi (8\sqrt{2})^3}{3}
\\\\\\
V=\cfrac{2\pi (8^3\sqrt{2^3})}{3}\implies V=\cfrac{2\pi \cdot 512\cdot 2\sqrt{2}}{3}
\\\\\\
\boxed{V=\cfrac{2048\pi \sqrt{2}}{3}}
7 0
3 years ago
Find the mode, median, mean, and range for each data set. Round the mean to two decimals places, where necessary.
Verdich [7]

Answer:

The median, mean, and mode of the data set are 5, 4.8, and both 4 and 5 respectively.

Step-by-step explanation:

To find the median of a data set, line up all values from greatest to least and find the number in the center. For example, in the set 1; 2; and 3, 2 would be the median. In this case, the order would be 2, 4, 4, 4, 5, 5, 5, 6, 6, 7. The two numbers in the middle are 5 and 5, their average is 5, so that would be the median. The mean of a data set is the average of all data values in a set. In this case, there are 10 data values, and their total sum is 48, so the mean of this data set is 4.8. The mode of a data set is the value that occurs the most in a set. In this case, 2 occurs once, 4 occurs three times, 5 occurs three times, 6 occurs twice, and 7 occurs once, so the mode of this data set is both 4 and 5.

3 0
3 years ago
The Baldwin family walked four over five of a mile in four over nine of an hour. What is their unit rate in miles per hour? (5 p
ELEN [110]

Answer:

4/5 / 4/9 = 1 and 4/5 mph or B

Step-by-step explanation:

4/5 / 4/9

4/5 times 9/4 = 36/20

36/20 simplified =  9/5

9/5 = 1 and 4/5

6 0
2 years ago
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A town has a population of 18000 and grows at 2% every year. What will be the
Mazyrski [523]

Answer:

22,828

Step-by-step explanation:

6 0
2 years ago
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