Question

The mean of 7,9,x+3,12,2x-1 and 3
is 9.
plz give answer by clear pic​

Answer 1

$mean = \frac{sum \: of \: observation}{total \: no. \: of \: observations}$

$\frac{7 + 9 + x + 3 + 12 + 2x - 1 + 3}{6} = 9$

$33 + 3x = 54$

$3x = 54 - 33$

$3x = 21$

$x = \frac{21}{3}$

$x = 7$

Thnx ✌️✌️

Answer 2

The value of x us 7

Thnx✌️✌️