Please help, the question is in the image, also my answer right??? If not please give the answer and explain why I have to turn it in soon!!

The triangles are similar. what is the value of x? enter your answer in the box.

Which are the possible side lengths of a triangle?

Among the most famous of all meteor showers are the perseids, which occur each year in early august. in some areas the frequency of visible perseids can be as high as 40 per hour. given that such sightings are poisson events, calculate the probability that an observer who has just seen a meteor will have to wait at least five minutes before seeing another.