ANSWER ASAP PLEASE FOR BRAINLIEST
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Hey there!
Here is your question -
In this equation, you're looking for n alone. To keep the variable alone, you have to do the opposite of what's happening to the variable.
In this equation, 12 is being added to n. The opposite of that is subtracting 12.
Subtract 12 from both sides -
Your answer is -8.
Hope this helps! :)
Let 
denote the event that a student is a freshman, 
a sophomore, 
a junior, and 
a senior.
Let
denote the event that a student majors in engineering. By the law of total probability,
By the definition of conditional probability, we can expand each of these intersection probabilities to get
Let
By the definition of conditional probability, we can expand each of these intersection probabilities to get