7^7/7^3=7^x solve for x

Simplify.7x + 3y - 2 + 6x + 1 + y squared 2 you! ; )

What is the period of the sinusoidal function ?

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.