Question

the mean of 7 9 12 x 14 is 10 find value of x​

Answer 1

Answer:

no. of data = 5

sum of data = 42+ x

mean = 10

than,

we have ...

mean = sum of data / no. of data

10 = 42+ x / 5

50 -42= x

8 = x

answer

Answer 2

Answer:

X = 8

Step-by-step explanation:

$mean = \frac{7 + 9 + 12 + x + 14}{5} \\ \: \: \: \: \: \: \: \: 10 = \frac{42 + x}{5} \\10 \times 5 = 42 + x \\ \: \: \: \: \: \: \: \: \: \: x = 50 - 42 \\ \: \: \: \: \: \: \: \: \: \: x = 8$