Abag contains 10 marbles: 2 are green, 6 are red, and 2 are blue. jessica chooses a marble at random, and without putting it back, chooses another one at random. what is the probability that the first marble is green and the second is red? write your answer as a fraction in simplest form.

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