Answer:
Hello :)
Step-by-step explanation:
1. a
2. None
3. c
4. b
Hope this helps :)
The new mean is 66.09
<u>Explanation:</u>
Mean weight of 20 students = 65kg
One student with 88kg entered the room.
New mean = ?
![\frac{x_1+x_2+....+x_2_0}{20} = 65](https://tex.z-dn.net/?f=%5Cfrac%7Bx_1%2Bx_2%2B....%2Bx_2_0%7D%7B20%7D%20%3D%2065)
![\frac{x_1+x_2+....+x_2_0 + 88}{21} = ?](https://tex.z-dn.net/?f=%5Cfrac%7Bx_1%2Bx_2%2B....%2Bx_2_0%20%2B%2088%7D%7B21%7D%20%3D%20%3F)
The above equation can further be written as:
![x_1 + x_2 +....+x_2_0 = 65 X 20\\\\x_1 + x_2 +....+x_2_0 = 1300](https://tex.z-dn.net/?f=x_1%20%2B%20x_2%20%2B....%2Bx_2_0%20%3D%2065%20X%2020%5C%5C%5C%5Cx_1%20%2B%20x_2%20%2B....%2Bx_2_0%20%3D%201300)
New mean = ![\frac{1300 + 88}{21}](https://tex.z-dn.net/?f=%5Cfrac%7B1300%20%2B%2088%7D%7B21%7D)
= 66.09
Therefore, the new mean is 66.09
(-2)(-5)(-7)
(10)(-7)
-70
The product is -70
Answer:
Yes it is a Function
Step-by-step explanation:
Because there are no same x-values with the same y-values