Perform each operation and express your answers in STANDARD form. Show your work. Part A:
(7 – 18i) – (5 – ROOT(-81)
Part B:
(9 + 2 ROOT(6)i) (9 – 2 ROOT(6)i)

Match each inequality to the number line that represents its solution

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.

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.