Given E (-6, y), F(6, 13)G(14,11), and H(8,-13), find the value of y so that EF is perpendicular to GH. Give answer as a whole number with no commas or decimals.

At least two people have the same birthday in a school of 150 students

Draw a tape diagram to represent each situation.for some of the situations,you need to decide what to represent with a variable andre bakes 9 pans of brownies.he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students

How do you find the distance of each number from the mean