Ajar contains 3 blue marbles, 6 red marbles, 1 green marble, and 2 black marbles. a marble is chosen at random from the jar and replaced. then another marble is chosen at random. find the probability of the first marble being red and the second marble being green.

1⁄2 = 50%

7⁄24 = 29.2%

7⁄12 = 58.3%

1⁄24 = 4.2%

7⁄144 = 4.9%

For the following sequence determine the common difference (if it is an arithmetic sequence) or the common ratio (if it is a geometric sequence).

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations