Answer:
x = 6
Step-by-step explanation:
Answer:
we know that mean of the data set is
Sum of all terms / total no. of terms
mean = 120+145+130+80+95+100+340+n / 8
140 = 1010+n / 8
140*8 = 1010 + n
1120 = 1010 + n
1120 - 1010 = n
110 = n
therefore the value of n should be 110
hope it's helpful
A solution is an assignment of values to the unknown variables that makes the equality in the equation true.