Answer:
51
Step-by-step explanation:
The mean is obtained by adding up the values in the data set and then divide by the number of values that you added:

Given our mean as 11.5 and n=4:

#Knowing our sum as 65, we can obtain x by subtracting sum of known values from 65:

Hence, the value of x is 51
Hello! I hope this helps you!
If you are to simplify the expression, you’d be getting the answer of:
8x-2
Answer:
inverse operations (KristaKingMath)
16 as 1-4 =4secs so 1-16=16