Answer:
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,

Answer:
see attached
Step-by-step explanation:
The line at the lower left of the shaded region is x+y=12. The shaded area is above that line because is represents a minimum amount of exercise.
Answer:
107520x6+89344x5−241808x4−55444x3+121478x2+6030x−12600
Step-by-step explanation:
brailiest
6.5 is equal to 65/10 the reciprocal of that is 10/65=2/13