Write this as the sum of:
a+md
a+md+d
a+md+d+d
...
a+md+d+d+...+d
Total=n(a+md)+d(1+2+3+...+n-1)=n(a+md)+dn(n-1)/2
Answer: 32.9ft on delta math
Step-by-step explanation: none
1. Answer;
- Triangle
Explanation;
The cross section formed by a plane that contains a vertical line of symmetry for a tetrahedron is a Triangle.
A tetrahedron also a triangular pyramid, is a polyhedron composed of four triangular faces, six straight edges, and four vertex corners.
2. Answers
- Triangle
Explanation;
The cross section formed by a plane that intersects three faces of a cube is a Triangle. A cross section is the shape we get when cutting straight through an object. The shape of the cross-section of a solid depends upon the orientation of the cutting plane to the solid.
The correct answer would be (3x-1)(2x+3)
