Find the value of x. 12.5, -10, -7.5, x. the mean is 11.5

Mean is calculated by adding all numbers and dividing by how many there are. I have set up an equation to find x from the given mean.

To cancel out the denominator, multiply both sides by 4.

When that is done, you are left with:

Combine like terms:

Add 5 to both sides, cancelling out the -5 on the left.

Your answer is 51.

If you want to check your work, plug in 51 for x.

So remember that the mean is . In our case, the equation is

Firstly, add up everything in the numerator:

Next, multiply both sides by 4:

Lastly, add both sides by 5 and your answer will be

24/56=hx^7

step-by-step explanation: