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Effectus [21]
2 years ago
15

Find the median and mean of the data set below:

Mathematics
2 answers:
Anvisha [2.4K]2 years ago
4 0
Bro I’m trying to figure this out on my own test
jarptica [38.1K]2 years ago
4 0

Answer:

median: 30

mean: 27

Step-by-step explanation:

If you put the data into order from small to big, you find the median by finding the exact middle of the list.

Here we have:

5,5,10,10,30,30,42,

42,48,48

This list has an even number of items. So it doesn't have one number in the middle, it has two. Here, the number is the same number, 30, so that is the median. (If there was one number in the middle that would be the median; if there were two different numbers in the middle, we'd average them.) THE MEDIAN IS IN THE MIDDLE.

To find the mean, you do what is commonly called finding the average. You add all the numbers and divide by the number of items in the list.

To find the MEAN, ADD AND DIVIDE.

5+5+10+10+30+30+42+42+48+48

= 270

Divide by 10 because there's 10 numbers in the list. 270/10 = 27

The mean is 27.

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A group of students takes a test and the average score is 72. One more student takes the test and receives a score of 88 increas
Stells [14]

Answer:

3 student.

Step-by-step explanation:

From the first statement:

Let the total score be T

Let the total number of student be x

The average of the score = 72

Average = Tota score / number of student

72 = T/x

Cross multiply

T = 72x ..... (1)

Second statement:

One more student took the test and the average becomes 76 with the student having a score of 88.

Therefore,

Overall score = T + 88

Total student = x + 1

Average = 76

Average = overall score / total number of student

76 = (T + 88) /(x + 1)

Cross multiply

76(x + 1) = T + 88

Clear bracket

76x + 76 = T + 88

From equation 1

T = 72x

76x + 76 = 72x + 88

Collect like terms

76x – 72x = 88 – 76

4x = 12

Divide both side by the coefficient of x i.e 4

x = 12/4

x = 3

Therefore, the initial number of the student were 3.

4 0
3 years ago
Please help!! I really don't want to get this one question wrong and mess up my score :(
Elan Coil [88]

Answer:

12^9 is the correct answer to the question

Step-by-step explanation:

12^8+(-)8-(-)9=8-8+9=9

12^9

7 0
2 years ago
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Find the domain, range and if it’s a function.
Marta_Voda [28]
Domain: {-1}
Range: {0, 4, 9, 15}
Function? No

Explanation:
The domain is the x value in the given points. The only x value is -1.
The range is the y value in the given points.
You can tell if this is a function if it has repeating x values or not. Since the x value of -1 repeats, it is not a function.

Hope this helps, and please mark brainliest :)
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2 years ago
For what value of x does 32X – 9^3x-4?
Lubov Fominskaja [6]

Answer: X = 4/61

Step-by-step explanation

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Explain how to use the distributive property to find an expression that is equivalent to 20 + 16. PLZ REALLY NEED HELP
anzhelika [568]

Answer:

16 + 20 or 2 x 18

Step-by-step explanation:

6 0
3 years ago
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