What is the value of 9a^-1b^-3 for a=5 and b=-1
-(5/9)
-(9/5)
5/9
9/5

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.

Either enter an exact answer in terms of \piπ or use 3.143.14 for \piπ and enter your answer as a decimal.

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)