Tony’s electronics is marking down the price of a tv 23% from the original price of $175. which expression can be used to find the sale price.
175 + 0.23(175)
23 + 1.75(23)
175 – 0.23(175)
23 – 1.75(23)

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.