If –1 is a root of f(x), which of the following must be true? a factor of f(x) is (x – 1). a factor of f(x) is (x + 1). both (x – 1) and (x + 1) are factors of f(x). neither (x – 1) nor (x + 1) is a factor of f(x).

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 "

13cm

step-by-step explanation:

(apex)