Question

If the arithmetic mean of 5, 4, x, x + 3, 9 and 8 is 6, find out value of x. अगर 5, 4, x, x + 3, 9

Answer 1

Answer :

x = 3.5

Step-by-step explanation :

 $\underline{\underline{\bf Mean:}}$

       ⇒ It is the average of the numbers.

       ⇒ Add up all the terms and divide the number of terms in the data set.

       ⇒ The mean of x₁, x₂, x₃ ,..., xₙ

                 $Mean=\frac{x_1+x_2+x_3+.....+x_n}{n}$

         $\boxed{\bf Mean=\frac{sum \ of \ observations}{number \ of \ observations} }$

Given,

 The arithmetic mean of 5, 4, x, x + 3, 9 and 8 is 6

        $\bf \frac{5+4+x+x+3+9+8}{6} =6 \\\\ \frac{29+2x}{6} =6 \\\\ 29+2x=6\times6 \\\\ 29+2x=36 \\\\ 2x=36-29 \\\\ 2x=7 \\\\ x=7/2 \\\\ x=3.5$

║ The value of x is 3.5

Answer 2

Step-by-step explanation:

Refer the attachment

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