A long-distance runner started on a course at an average speed of 6 mph. Half an hour later, a second runner began the same course at an average speed of 8 mph. How long after the second runner starts will the second runner overtake the first runner?

Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3

The pyraminx is a rubik's cube-type toy in the shape of a tetrahedron. the pyraminx shown below has edges 15\,\text{cm}15cm long and vertical height h=12.2\,\text{cm}h=12.2cm. the triangle drawn with dashed lines is a right triangle. what is the distance rr? round your answer to the nearest tenth.

15. if the 8% tax on an item amounts to $0.96, what is the final price (tax included) of the item?