How did I get an answer the second I submitted my questions?
This is likely due to the fact that you are using a platform that has a team of experts available to answer questions in real-time. This means that as soon as you submit your question, an expert is available to provide an answer.
That is not true!!!
Yes, there is (or was) a team of tutors that volunteered to answer
questions. Due to the many negative changes that Jiskha (now LLC)
many have left. We would look at the questions, in my case often work
them out on paper and then give a response.
What you are getting is some algorithm giving you almost instantaneous
replies. The only problem, at least in math, is that many are incorrect.
I am about to post a nice Calculus question to see how the algorithm
handles it