Answer:
Therefore, we conclude that the probability is P=0.31.
Step-by-step explanation:
We know that in a recent Kentucky Derby, the betting odds for the favorite horse were 9 to 5. We calculate the  probability that the favorite horse will win the race. Therefore, we get:
[tex]P=\frac{1}{5}+\frac{1}{9}\\\\P=\frac{14}{45}\\\\P=0.31\\[/tex]
Therefore, we conclude that the probability is P=0.31.