If you flip three fair coins what is probability that you'll get all three heads

What is the percent of increase for a population that changed from 438,000 to 561,000

Find the value of the cosine for angle a

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of florida was approximately two times the population of california. b. the population of florida was approximately twenty times the population of california. c. the population of california was approximately twenty times the population of florida. d. the population of california was approximately two times the population of florida.