A given rectangles length is two times as long as its width .if the rectangles perimeter is 42 units what is its area

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

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.

Annabelle's homework is 75% it took her three hours how long should she estimate it will take her to complete her homework.