Is the statement below always, sometimes, or never true? give at least 2 examples to support your reason the lcm of two numbers is the product of the two numbers

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

What is the missing step in this proof ?

Given: m∠ adb = m∠cdb ad ≅ dc prove: m∠ bac = m∠bca lol