Question

if the mean of 4,6,3,2x+4,3x-6,5,6,7 is 10.find X.​

Answer 1

Step-by-step explanation:

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Answer..

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Answer 2

Answer:

51/5=10.2

Step-by-step explanation:

Given data: 4,6,3,2x+4,3x-6,5,6,7

Mean=10

Here,

Sum of all the observation=4+6+3+2x+4+3x-6+5 + 6 + 7 =29+5x

Total number of observations=8

Mean is the average of the given numbers and is calculated by dividing the sum of given numbers by the total number of numbers.

$Mean =\frac{Sum \: of \: all \: \: the \: observation}{Total \: \: number \: of \:observations}$

So,

$10 = \frac{29 + 5x}{8} \\ 80 = 29 + 5x \\ 5x = 80 - 29 \\ 5x = 51 \\ x = \frac{51}{5} \\ x = 10.2$

Hence, the answer is x=51/5=10.2.