Question

find the mean of x,2x,3 and (5x+1)​

Answer 1

The mean of x, 2x,3 and 5x+1 will be

2x +1.

The mean of a few observations is calculated as the sum of the observations divided by the number of observations.

In the question the number of observations is four.

Mean =x+2x+3+5x+1/4= 2x+1

The mean of observations denotes the average of the above mentioned values and is a important mathematical tool.

Answer 2

The mean of x, 2x, 3 and (5x + 1)​ = 2x + 1

Step-by-step explanation:

The given observations are:

x, 2x, 3 and (5x + 1)​

Here, the number of observations = 4

To find, the mean of x, 2x, 3 and (5x + 1)​ = ?

We know that,

Mean = $\dfrac{sum of all observations}{Total number of observations}$

= $\dfrac{x+2x+3+(5x+1)​}{4}$

= $\dfrac{x+2x+3+5x+1}{4}$

= $\dfrac{8x+4}{4}$

Taking 4 as common in numerator, we get

= $\dfrac{4(2x+1)}{4}$

= 2x + 1

∴ The mean of x, 2x, 3 and (5x + 1)​ = 2x + 1