Find the fourth, sixth, and thirteenth terms of the sequence described by each
explicit formula.
15. a(n) = 6 + (n - )
16. a(n) = 12 + (n - 1)(5)
17. a (n) = -2.2 + (n - )
18. a(n) = 5 + (n - 1)(0.5)
19. a(n) = -3 + (n - 1)6)
20. a(n) = -7.6+ (n 1)(3)

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 "

50-38=12

step-by-step explanation: