Michael wants to take French or Spanish, or both. But classes are closed, and he must apply and get accepted to be allowed to enroll in a language class. He has a 50% chance of being admitted to French, a 50% chance of being admitted to Spanish, and a 20% chance of being admitted to both French and Spanish. If he applies to both French and Spanish, the probability that he will be enrolled in either French or Spanish (or possibly both) is

80%.

Step-by-step explanation:

Given the following probabilities:

In Probability Theory, when we have BOTH , we mean the intersection of the probabilities. Therefore:

We want to determine the probability that he will be enrolled in either French or Spanish (or possibly both).

Probability of either A OR B =

From Probability Theory:

The probability that he will be enrolled in either French or Spanish (or possibly both) is 80%.

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.