Which of these diagrams shows a line segment?

What is the solution set of the quadratic inequality x^2-5< or equal to 0

Find the area of the regular hexagon if a side is 20 cm.

Based on the diagram, match the trigonometric ratios with the corresponding ratios of the sides of the triangle. tiles : cosb sinb tanb sincposs matches: c/b b/a b/c c/a