Describe the relationship between the probability of an event and its complement. keep it short and easy : ) thx so much!

Which triangles area would be calculated using the trigonometric area formula

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

List the sides of δrst in ascending order (shortest to longest) if: m∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12