Answer:
a(n) = -351+8(n-1)
Step-by-step explanation:
This is an arithmetic sequence. Each new term is equal to the sum of the previous term and 8.
The expression you want is a(n) = -351+8(n-1)
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.
Answer:
x = 100
Step-by-step explanation:
the sum of the 3 angles in a triangle = 180°
Sum the 3 angles and equate to 180
52 + 28 + x = 180
80 + x = 180 ( subtract 80 from both sides )
x = 100
Answer:
5
Step-by-step explanation:
