3x+6/x^2-x-6+2x/x^2+x-12 place steps to determine the sum of the expressions in the correct order

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

Ten times the square of a non-zero number is eqaul to ninety times the number

Given: ∆mop p∆mop =12+4 3 m∠p = 90°, m∠m = 60° find: mp, mo