Using concepts of probability, it is found that there is a 4.7% probability that it arrives in Philadelphia (PHL).
<h3>What is a probability?</h3>
A <em>probability </em>is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.
Over a large number of trials, a percentage can also represent the probability of single event.
In this question, researching the problem on the internet, we have that over a large number of flights, of those which arrived on time, 4.7% of them were in Philadelphia, hence:
There is a 4.7% probability that it arrives in Philadelphia (PHL).
We have the following expression: (x- (5/2)) ^ 2 = (13/4) Let's rewrite the given expression: x ^ 2 - 5x + 25/4 = (13/4) x ^ 2 - 5x + 25/4 - 13/4 = 0 x ^ 2 - 5x + 12/4 = 0 x ^ 2 - 5x + 3 = 0 Answer: the original equation given to Sam could have been: x ^ 2 - 5x + 3 = 0
