10. When Raphael solved the system below by using the method of elimination, he changed the second equation to –8x – 2y =-2. What property justifies this manipulation?
8x + 3y = 7
4x + y =1

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Step-by-step explanation:

second equation

to –8x – 2y =-2. What property justifies this manipulation?

8x + 3y = 7

4x + y =1

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 "