Answer:
2/7
Step-by-step explanation:
For the president position, there are 4 females from a total of 7 people.
For the vice president position, there are 3 males from 6 people left over.
So the probability is 4/7 × 3/6 = 2/7.
For the limit to exist, the limits from either side must also exist and be identical. We have


Since the limits do not match, the overall limit does not exist.
Answer:
Pythagoras theorem. 20^2 times 18^2 = distance^2