To solve this problem you must apply the proccedure shown below:
1. The vertex i at <span>(0, 36) and a focus at (0, 39), then you have:
a=36
a^2=1296
2. The directrix is:
y=a^2=c
c=39
y=1296/39
</span>y=432/13<span>
Therefore, the answer is the option D, which is: </span><span>D. y=± 432/13</span>
The Sample Mean of hours slept of the ten men asked is 8.4 hours.
The population Mean of hours slept of all the members of the theater group is 8.3 hours.
Answer:
No.
Step-by-step explanation:
We assume you're concerned with

The sum of a non-negative number and a positive number cannot be zero. The square root is always non-negative.
If

then we have

By Fermat's little theorem, if

is not divisible by a prime

, then

This works for

; in this case, we would have