Answer:

Step-by-step explanation:
we know that
The Euler's formula state that: In a polyhedron, the number of vertices, minus the number of edges, plus the number of faces, is equal to two

in this problem we have

substitute the given values

solve for V
Combine like terms left side

Adds 6 both sides


Answer:
bottom rung 24cm. wide and the top rung
18cm. wide. If the length of the rungs decreases uniformly from bottom to top, how long
should each of the seven intermediate rungs be?
3,Find the first term of the sequence 10, 5, 2.5, 1.25, . . . which is less than 0.0001.
3,In an arithmetic sequence, if the p
th term is q and the q
th term is p, find the (p + q)
th term.
Answer:
The answer is D. Constantine reunited the empire and served as sole ruler while Diocletian divided the empire and shared emperor duties.
Step-by-step explanation:
Answer:x=-2
Step-by-step explanation:
4x+10=7x+16
10=3x+16
-6=3x
X=-2
Answer:
xy1
Step-by-step explanation:
Correct option is C)
Given two equations are 2x+y+4=0 and x=3y+7=0
let us consider 2 equations ax+by+c=0 and mx+ny+p=0
By cross multiplication method ,the equations obtained will be ,
b×p−n×c
x
=
c×m−a×p
y
=
a×n−b×m
1
Thus comparing it with given 2 equations we obtain:
7−12
x
=
4−14
y
=
6−1
1