Use sigma notation to represent the sum of the first six terms of the following sequence: −10, −13, −16, …

The Correct answer is C) the summation from n equals one to 6 of quantity negative 7 minus 3 times n

a net is a diagram that shows a “flattened” view of a solid. in a net, each face and base is shown with all of its dimensions. a net can also serve as a pattern to build a three-dimensional solid.

a pyramid is a three-dimensional object with a base that is a polygon and triangular faces that meet at one vertex.

" the net of a triangular pyramid consists of four triangles. the base here we are given of the pyramid is a equilateral   triangle, and the lateral faces are also triangles "