A number, containing no zeros, changed to 510,000 after it was rounded. To what place was the number rounded? Complete the explanation.
The number was rounded to the (blank) place. All the digits to the right of the (blank) place are (blank)

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.