A radio station gives free tickets to 10% of the people attending a concert. The radio station gives 640 people free tickets. What is the total number of people who attended the concert?

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg

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 california was approximately two times the population of florida. b. the population of florida was approximately twenty times the population of california. c. the population of florida was approximately two times the population of california. d. the population of california was approximately twenty times the population of florida.

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50.