Multiple choice in mr. mamer's math class, there are three times as many girls as boys. the girls' mean grade on a recent quiz was 90, and the boys' mean grade was 86. what was the mean grade for the entire class?
f. 88
g. 44
h. 89
j. 95

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 "