For a health assignment, Janet and Kate record how many students wear glasses in each of their classes. In Janets's class, 15 out of the 25 students wear glasses. In Kate's class, 12 out of the 20 students wear glasses. Which class has the greater ratio of students with glasses to total students?

Cone a has a surface area of 384 ft2 and cone b has a surface area of 96 ft? . what is the ratio of their volume?

Measure a and b and find their sum. how are the angles related?

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