F the first three numbers of a proportion are 19, 38, 11, find the fourth proportional is

Solve |x| > -9 a) {x|x< -9 or x> 9} b) all reals c) no solution

Alonso walked with his friend andy one day, and wanted to compare their speeds. alonso walked 3 miles in one hour, and andy walked 2 miles in 2 hours. complete the table to graph the relationship for each person.

If the discriminant if a quadratic equation is 4 which statement describes the roots?