Question

if the mean value of x, 6, 8, 9 and 12 is 8 then the value of x is ​

Answer 1

Answer:

value of x is 5

Step-by-step explanation:

5+6+8+9+12 = 40

40/5= 8

Answer 2

Value of x is 5 if mean value of x, 6, 8, 9 and 12 is 8

Given:

Mean value of x, 6, 8, 9 and 12 is 8

To Find:

Value of x

Solution:

Mean = ( Sum of all the values)/ (count of values)

Step 1:

Find Sum of all the numbers

x + 6 + 8 + 9 + 12

= 35 + x

Step 2:

Divide Sum of all the numbers by 5 (count of numbers) and Equate with mean

(35 + x)/5 = 8

Step 3:

Solve for x:

35 + x = 40

=> x = 40 - 35

=> x = 5

Hence, Value of x is 5