Which of the following expressions are equivalent to the one above ? Check all that apply

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

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