14 tiles would be able to go on that one side of the counter
Answer:
Well, The expression -81 is equal to -81.
Step-by-step explanation:
-81=-81
Answer:
![\bar X= \frac{\sum_{i=1}^n X_i}{n}](https://tex.z-dn.net/?f=%5Cbar%20X%3D%20%5Cfrac%7B%5Csum_%7Bi%3D1%7D%5En%20X_i%7D%7Bn%7D)
The reason is because we assume that each week have the same weight and replacing we got:
![\bar X= \frac{190+163+327+205}{4}= 221.25](https://tex.z-dn.net/?f=%5Cbar%20X%3D%20%5Cfrac%7B190%2B163%2B327%2B205%7D%7B4%7D%3D%20221.25)
And the best option would be:
D. 221.25
Step-by-step explanation:
For this case we have the following data given
Week 1 2 3 4
Minutes 190 163 327 205
For this case we can find the mean with the following formula:
![\bar X= \frac{\sum_{i=1}^n X_i}{n}](https://tex.z-dn.net/?f=%5Cbar%20X%3D%20%5Cfrac%7B%5Csum_%7Bi%3D1%7D%5En%20X_i%7D%7Bn%7D)
The reason is because we assume that each week have the same weight and replacing we got:
![\bar X= \frac{190+163+327+205}{4}= 221.25](https://tex.z-dn.net/?f=%5Cbar%20X%3D%20%5Cfrac%7B190%2B163%2B327%2B205%7D%7B4%7D%3D%20221.25)
And the best option would be:
D. 221.25
X6 – 9x3 + 8 = 0
let u = x^3
u^2 - 9u + 8 = 0
(u-8)(u-1) = 0
u = 1,8
back substitute
1 = x^3
8 = x^3
<span>x = 1 , 2</span>