Question

For 10 values denoted x, it is given that the mean equals7.4.
Find the sum of all values

Answer 1

let's see what to do buddy....

Explanation:

The mean of the 10 values denoted x equals 7.4

So we have :

`(x(1) + x(2) + x(3) + ... + x(10))/(10) = 7.4 \\`

Multiply the sides of the equation by 10 :

`10 * (x(1) + x(2) + x(3) + ... + x(10))/(10) = 7.4 * 10 \\`

After do that we have :

`x(1) + x(2) + x(3) + ... + x(10) = 74 \\`

Which means we have the sum of all values.

And we're done...

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