19, Find the coordinates of the orthocenter of a triangle with vertices at each set of points on a coordinate plane. SEE EXAMPLE 5 b (3,1), (10,8), (5,13)

Mozart lenses inc. recently introduced seelites, a thinner lens for eyelasses. of a sample of 800 eyeglass wearers, 246 said they would purchases their next pair of eyeglasses with the new lenses. lenses inc. estimates that the number of people who purchase eyeglasses in a year is 1,700,000. most eyeglasses wearer buy one new pair of eyeglasses a year. what is the annual sales potential for the new lenses.

10% of 1,900,000. show me how you got the answer

Which statement best explains why ben uses the width hi to create the arc at j from point k