If g has n vertices and is regular of degree r, how many edges has g?

We know that the sum of the degrees of the vertices of the graph is twice the number of edges of the graph.

Let be a graph with vertices

Then where is the number of edges of the graph. Since the graph is regular of degree r then all vertices have degree r. Thus,

(-5,-28)

i graphed to on desmos.

the number of possible outcomes that do not show a 1 on the first spinner and show the number 4 on the second spinner is 2.

spinner 1 spinner 2

1                     1

1                     2

1                     3

1                     4

2                   1

2                   2

2                   3

2                   4   = not 1, and 4

3                   1

3                   2

3                   3

3                   4 = not 1, and 4

only 2 outcomes have passed the given condition.

step-by-step explanation: