If a plane can travel 490 miles per hour with the wind and 430 miles per hour against the wind, find the speed of the plane without a wind and the speed of the wind. The speed of the plane in still air is miles per hour. The speed of the wind is miles per hour.

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.

Astore has clearance items that have been marked down by 60%. they are having a sale, advertising an additional 55% off clearance items. what percent of the original price do you end up paying?

How is this equation completed? i cannot find any examples in the book.