There are 100 coins scattered in a dark room. 90 have heads facing up and 10 are facing tails up. you cannot tell which coins are which. how do you sort the coins into two piles that contain the same number of tails up coins?

Find the equation of a line that is perpendicular to line g that contains (p, q). coordinate plane with line g that passes through the points negative 3 comma 6 and 0 comma 5 3x − y = 3p − q 3x + y = q − 3p x − y = p − q x + y = q − p