This is on probability for stat.
Any help is appreciated :)

The answer is 97%

Step-by-step explanation:

If you consider the attached tree diagram, there are two possibilities (In green) that you are looking for:

The probability of scenario 1 is 70% and the probability of scenario 2 is 30% * 90% = 27%.

Since we can have either possibility, we add the two together to get 70% + 27% = 97%.

30

step-by-step explanation:

times by times

18

step-by-step explanation:

draw the shape and you will see that f and k are actually at adjacent vertices (points of the hexagon that are neighboring).   so find the distance between (1,2) and (4,2).   that is easy since (1,2) and (4,2) is just a vertical distance to count, which is 3.   it is a regular polygon which means all sides are congruent.   you have 6 sides (hexa) so multiply 6 by 3 to receive 18.