Question

Which of the following represents "the average of 171 and x"?

Answer 1

That would be (171 + x) / 2....what u do to find the average is add up all the numbers, then divide by how many numbers there are.

Answer 2

Answer:  $\dfrac{\text{171+x}}{\text{2}}$

Step-by-step explanation:

We know that the average of any n observations is given by :-

$\text{Average}=\dfrac{\text{Sum of observations}}{\text{Number of observations}}$

The given observations : x and 171

Sum of observations : $x+171$

Number of observations : 2

Now, the average of 171 and x is given by :-

$\text{Average}=\dfrac{\text{171+x}}{\text{2}}$

Hence, the expression represents the average of 171 and x is $\dfrac{\text{171+x}}{\text{2}}$.