A triangle has side lengths of (2t+2) centimeters,(6t-7) centimeters, and (u-2) centimeters. Which expression represents the perimeter, in centimeters, of the triangle?

8t + u -7

Step-by-step explanation:

The perimeter of a triangle is calculated by adding all the sides together. Therefore, in this case, the perimeter of the triangle will be:

= (2t + 2) + (6t - 7) + (u - 2)

= 2t + 2 + 6t - 7 + u - 2

= 2t + 6t + u + 2 - 7 - 2

= 8t + u -7

The perimeter will be (8t + u -7)cm.

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 "

pentagon

step-by-step explanation:

the coordinates   a(5, -2), b(3,-1),c(-4,-4) d(-3,8) and e(-1,4) forms the vertices of the polygon when they are connected in order.

in order to classify that which polygon is it with the given coordinates, first count the number of vertices and then count the number of sides it can make with these vertices.

since, the given coordinates have five vertices, therefore, it will make five sides. moreover, pentagon is regular in nature therefore it will be convex.

now, a polygon with five sides is known as pentagon, therefore, the given polygon is the pentagon.