Solve the following system of inequalities graphically on the set of axes below. State the coordinates of a point in the solution set. y< -\frac{2}{3}x+3
y<−
3
2

x+3
y\ge 3x-8
y≥3x−8

Step-by-step explanation:

The odds for an event is basically the ratio of the favorable outcomes to the unfavorable outcomes.

Given : The odds of choosing one black ball from an urn are 7 to 13.

i.e. favorable outcomes for getting black ball = 7

i.e.  unfavorable outcomes for getting black ball = 13

Now , Total outcomes = favorable outcomes+  unfavorable outcomes

=7+13=20

Then, the probability of getting a black ball

Hence, the required probability