Edward is taking a trip. The distance between two cities on a map is 4.5
centimeters. His map uses a scale in
which 1 centimeter represents 15
miles. What is the actual distance
Edward will travel between these two
cities in miles?

Three coins are flipped. what is the probability that there will be at least two tails?

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236

Find the solution on the interval [0, 2pi)