The Brainliest answer is 40x-72.
8*5=40(add the x because of the variable on the coefficient)
8*9=72, the 72 being negative because of the sign in front of it.
Answer:
Mean = (19 + 20 + 21 + 22 + 23)/5 = 105/5 = 21
x x - mean (x - mean)^2
19 -2 4
20 -1 1
21 0 0
22 1 1
23 2 4
Sum = 10
Step-by-step explanation:
The solution is shown in the photo
