We know that
The Euler's formula state that, the number of vertices, minus the number of edges, plus the number of faces, is equal to two
V - E + F = 2
clear F
F=2-V+E
in this problem
V=8
E=14
F=?
so
F=2-8+14
F=8
the answer is8 faces
Answer:
Step-by-step explanation:
we know that
The measure of the external angle is the semi-difference of the arches it covers
so
substitute the given values
Answer:
x= 8.24621125124 /
Step-by-step explanation:
8^2+2^2=x^2
64+4+x^2
68=x^2
x= 8.24621125124
Term = 5x^2
h = variable
21 is a constant
I think ab is an expression or the product of two factors.
2x - 15
15 is decreased that is the key word here which indicates subtraction.
twice a number with given variable x is 2x
subtraction always goes behind so 2x - 15