1) 14. 16/18 - 5/6 =

2) 5/6 - 9/15

How do you find the area of a triangle

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !

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.