The distance between (3,a) and (5,4) is root 13 find a

with explanations please

What is the length of the segment joining the points at (4,5) and (6,-2) round to the nearest tenth if necessary

If two parallel lines are cut by a transversal, interior angles on the same side of the transversal are supplementary. a. always b. sometimes c. never

C. using a standard deck of 52 cards, the probability of selecting a 4 of diamonds or a 4 of hearts is an example of a mutually exclusive event. true of false