Answer:
A. There is a focus at (-9, 1).
D. There is a directrix at x = -5.8.
F. There is a directrix at x = -2.2.
Step-by-step explanation:
Just did it in edg
Mean = (total of contributors) / (number of contributors)
For the 6 people in the room, you have
40 = (total of contributors) / 6
(total of contributors) = 6*40 = 240
A 60-year-old left the room, decreasing the total of contributors by 60.
(new total of contributors) = (total of contributors) - 60
(new total of contributors) = 240 - 60 = 180
Then the new mean is
(new mean) = (new total of contributors) / (new number of contributors)
(new mean) = 180 / 6 = 36
The mean age of the remaining 5 people is 36.
So 3 2/3 is about 3.67 so it would go in between 3.65 and 3.7. So it would be the second answer.
Answer:
10
Step-by-step explanation:
