40 es divicible entre 7? ​

Is δ pmr similar to δ smn ? if so, which postulate or theorem proves these two triangles are similar?

Convert 2000 swiss francs to dutch guilders

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