First, we can choose the seats for the four mathematicians. Then we seat the physicits, then the engineer. There are 4! ways to seat the mathematicians, then 3! ways to seat the physicists, then 1! ways to seat the engineer. But then we must divide by 8, because we can rotate the table, so there are 8!*4!*3!/8 = 725760 ways to seat everyone.
18
-3
0.9
Ugh hbd f go ihxhjf go

The Correct choice is B. Vertical
<u>V</u><u>ertical</u> Angles have each of the pairs of opposite angles made by two intersecting lines .
For this case we must factor
of the following expression:

By law of signs of multiplication it is fulfilled that:

So we have to:

Thus, by factoring we have:

Answer:
