Answer:
Rotation of 90° (CounterClockwise) (x, y) (-y, x)
Rotation of 180° (Both Clockwise and Counterclockwise) (x, y) (-x, -y)
Rotation of 270° (Clockwise) (x, y) (-y, x)
Rotation of 270° (CounterClockwise)
Step-by-step explanation:
Answer:
- 16
Step-by-step explanation:
Average is calculated as
average = 
Thus for the given 10 numbers we have
= - 5 ( multiply both sides by 10 )
total = - 50
let the number added be x, then
= - 6 ( multiply both sides by 11 )
total + x = - 66, that is
- 50 + x = - 66 ( add 50 to both sides )
x = - 16
The new number is - 16
I think the answer is 4 different possibility's.
I’ve attached a photo of the workings but the answer is 82