Compare the numbers in each pair, and give the factor by which the numbers differ. 1.) a. 250 million, 5 billion b. 9.3x10^2, 3.1x10^-2 c. 10^-8, 2x10^-13

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