Explain how to find the mean of a data set.

Mathematics

2 answers:

sergiy2304 [10]2 years ago

5 0

Answer:

give brainliest?

Step-by-step explanation:

the mean or average of a data set is found by adding all numbers in the data and then dividing by the number of values in the set.

For example, if you have 10 numbers, you add them up and divide by 10. This would give you the mean of the data.

Here's another example with the numbers: 9,8,22,7,7,8,17

First add the numbers up: 9+6+20+7+7+8+20+2+2 = 81 Then divide 81 by the total number of data points, 9, and you get 9.

Theerefore the mean is 9.

Elenna [48]2 years ago

3 0

Answer:

to find the mean you must add all of the numbers in a data set together and then divide by how many numbers there are.

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masha68 [24]

Angle MON= 58
Step-by-step explanation:
MON+LOM=LON
(2×+33)+(3×+20)=113
5×+53=113
5x=60
x=12
Solve MON by plugging in the x value
MON=2(12)+33
MON=24+33
MON=58
Hope this helps =W= nya

6 0

2 years ago

Solve for x in the following trapezoid. Assume QP is a mid segment.

labwork [276]

X = 2

Using the trapezoid mid segment theorem, knowing that the mid segment is parallel to the bases and half as long as the sum of the lengths of the bases, we add the lengths of the two bases and set it equal to two times the length of the mid segment.

7x+3+ 15= 16(2)

7x+18= 32

Subtract 18 from both sides.

7x = 14

Divide both sides by 7.

X = 2.

You can check your work by solving for the length of the base 7x + 3.

7(2)+3 =17

Then, add the length of the two bases together.

15 + 17 = 32. Half of 32 equals sixteen, which is your mid segment.

(correct me if i’m wrong, i got the theorem off of the internet and did the rest of the work myself.)

8 0

2 years ago

Problem is in the pictures

marta [7]

Answer:

Step-by-step explanation:

$\left\{\begin{array}{ccc}6x+3y=-21&\text{divide both sides by (-3)}\\2x+5y=5\end{array}\right\\\underline{+\left\{\begin{array}{ccc}-2x-y=7\\2x+5y=5\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad\qquad4y=12\qquad\text{divide both sides by 4}\\.\qquad\qquad y=3\\\\\text{Put it to the second equation:}\\2x+5(3)=5\\2x+15=5\qquad\text{subtract 15 from both sides}\\2x=-10\qquad\text{divide both sides by 2}\\x=-5$