Prayer is answered by belief.
So if you know that God can, then He will.
When mine are answered, nothing this side of Earth could have done the same.
Example, 2 years ago I had a car that would not pass rego, and a friend who's mother had just died said to me''would you like my mothers car''.
I asked her 'why' was she asking me, and she told me God had told her that I was the person who would look after her mothers car.
So she gave me this $5,000 car ! but it gets better, it was the exact same colour as my old car, and takes only half the petrol.
I had been saying for months how I didn't know how much longer I could put in $100 of petrol per week.Now it is exactly $50!
That's only one answer to prayer, but when it is from God you know, because it is exactly what you need.Or even more!