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lana66690 [7]
3 years ago
14

A group of 8 students was asked, "How many hours did you watch television last week?" Here are their responses: 7, 20, 8, 15, 10

, 17, 7, 13 Find the mean and median number of hours for these students. If necessary, round your answers to the nearest tenth.
Mathematics
2 answers:
cestrela7 [59]3 years ago
5 0
Well, lets find the Median first. Putting the numbers in order from least to greatest (7,7,8,10,13,15,20) then count from each side to find the middle number (15). To find the Mean you will add all of the numbers together and divide by how many numbers there are so 7+7+8+10+13+15+20=80. We then do 80/7=11.4, rounded will be 11.0.

Mean: 11
Median: 15

I hope this helped!
Musya8 [376]3 years ago
3 0
To find the mean you add up all the numbers and divide that amount by the amount of numbers. Which looks like this:
7 + 20 + 8 + 15 + 10 + 17 + 7 + 13= 97
97 divided by 8 = 12.125

The mean is 12.125.

To find the median you first need to put the numbers in order and then try to find the number in the middle. If there is two numbers in the middle those two numbers are still the median:
7, 7, 8, 10, 13, 15, 17, 20, 

The median(s) are 10 and 13. 
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dedylja [7]
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If they're related in that way, then they can be the lengths of the sides of a
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If they're not, then they can't.
5 0
3 years ago
Hope u can do it HELP MATH
Nostrana [21]

Answer:

the right answer would be 13

5 0
3 years ago
Read 2 more answers
A perfect square ends with the same two digits. How many possible values of this digit are there?
Alex73 [517]

Answer:

A perfect square is a whole number that is the square of another whole number.

n*n = N

where n and N are whole numbers.

Now, "a perfect square ends with the same two digits".

This can be really trivial.

For example, if we take the number 10, and we square it, we will have:

10*10 = 100

The last two digits of 100 are zeros, so it ends with the same two digits.

Now, if now we take:

100*100 = 10,000

10,000 is also a perfect square, and the two last digits are zeros again.

So we can see a pattern here, we can go forever with this:

1,000^2 = 1,000,000

10,000^2 = 100,000,000

etc...

So we can find infinite perfect squares that end with the same two digits.

7 0
3 years ago
SOMEONE PUT AN ANSWER SO IT DOESNT GET DELETED!!!
Nadusha1986 [10]

Answer:

The height of the cylinder is 4x units.

Step-by-step explanation:

volume of a cylinder = nr^2h

n = 22/7

r = radius = x/2

Let illustrate with an example. If the diameter of a cylinder is 6 and the volume is 6^3 = 216. The radius = 6/2 = 3

n3^2 x h = 216

h = 216/9 = 24

so the height is 4 times the diameter

Area of the base = nr^2

1/2^2 x x = 1/4 pi x^2

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2 years ago
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Evgesh-ka [11]
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