A bag contains 3 red marbles and 4 blue marbles a marble is taken randomly from the bag and replaced
another marble is taken from the bag
work out the probability that the two marble taken from the bag are the same colour
give your answer as a fraction

Acircle has a circumference of 28.36 units what is the diameter of the circle

Which of the following is a solution of z^6 = 64i? 2(cos105° + isin105°) 2(cos120° + isin120°) 2(cos135° + isin135°) 8(cos15° + isin15°)

Question 1 of 10 2 points different groups of 50 graduates of an engineering school were asked the starting annual salary for their first engineering job after graduation, and the sampling variability was low. if the average salary of one of the groups was $65,000, which of these is least likely to be the average salary of another of the groups? o a. $64,000 o b. $65,000 o c. $67,000 o d. $54,000