Question 13 Jalal notices the temperature outside at sunrise is 6 °F. An hour later the temperature is 12 " Which expression represents the change in temperature?
A
-6-(12) = -6
B
-6-(12) = -18
12-(6) = 18
2020 Ecate

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.