G Customers arrive at a call center according to a Poisson process with rate 6/π. (a) Find the probability that the 5th call comes within 10 minutes of the 4th call. (b) Find the probability that the 9th call comes within 15 minutes of the 7th call.

Hector and alex traded video games. alex gave hector one fourth of his video games in exchange for 6 video games. then he sold 3 video games and gave 2 video games to his brother. alex ended up with 16 video games. how many video games did alex have when he started?

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

Which geometric principle is used to justify the construction below?