Mary ann was born : 1983 and has sixty four years aold and her dauther has thirty two . May bie I dont shure .
The sample is not biased. It is a random sample.
It is the simplest expression which is a multiple of both of the original denominators. Then, the numerators only are added, and the result is divided by the lowest common denominator. Example. Express as a single fraction.
(10+3i)*(5-2i) =
50 - 20i + 15i - 6i²
i² = -1
50 - 5i - 6*(-1) =
50 - 5i + 6 =
56 - 5i
