Answer:
-60
Step-by-step explanation:
3(-5)+4(-9)-9
-15+-36-9
= -60
Just fill in and solve. Hope this helps ;)
Answer:
All the lateral faces in a triangular pyramid are congruent.
Step-by-step explanation:
- A triangular pyramid is a pyramid that has a triangular-shaped base.
- It has equilateral triangles which are equilateral.
- The pyramid is also known as tetrahedron because the base is of triangular shape.
- There are four faces and a triangular base in a triangular pyramid.
- There are four vertices and six edges.
A point in quadrant 4 would have the "x" value positive and the "y" value negative.
So, it would equal (+, -)
Source:
http://www.1728.org/quadrant.htm