The ratio of the number of girls to the number of boys at a school event was 9: 8. after some time, 25 of the girls left and the ratio became 1: 2. how many total students were originally at the event?

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.

Combine the information in the problem and the chart using the average balance method to solve the problem.

Given the sequence 7, 14, 28, 56, which expression shown would give the tenth term? a. 7^10 b. 7·2^10 c. 7·2^9