How many ways can you arrange nine performers in a row on stage

Fiona and her friends are playing a game by guessing where a coin will land when it is randomly dropped inside the square shown below. fiona guesses that the coin is likely to land in the blue area. which explains whether or not fiona is correct and why?

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angles. measure need asap

What is the location of point g, which partitions the directed line segment from d to f into a 5: 4 ratio? –1 0 2 3