dawityonathan4 dawityonathan4

24-05-2021
Mathematics

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the mean of 4 8 9 x and 2x is 6 calculate the value of x

Respuesta :

Adetunmbiadekunle Adetunmbiadekunle

29-05-2021

Answer:

x = 3

Step-by-step explanation:

Mathematically, the mean is the sum of the numbers divided by the count of the numbers

The count of the numbers is 5

Thus;

( 4 + 8 + 9 + x + 2x)/5 = 6

(21 + 3x)/5 = 6

21 + 3x = 6(5)

21 + 3x = 30

3x = 30-21

3x = 9

x = 9/3

x = 3

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