Draw a line from the orgin, o, to point D and from o to D measure the angle formed by OD and OD how many degrees was figure?

Which of the following is not a subset of {1,2,3}?

Hell . what are the solutions to `10x^2 - 38x - 8 = 0`? is this when i find the factors and use the numbers within the factors to determine the zeros? i hope that made sense lol

The surface area of the triangular prism is .