Two consecutive positive integers form part of a pythagorean triple. always, never, or sometimes?

If f(x)=x^3 and g(x)=2x+7 when g(x)=-5

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable

Maria walks a round trip of 0.75 mile to school every day. how many miles will she walk in 4.5 days