Hich statement is true? a)you can use both permutations and combinations when order matters. b)you can use permutations when order matters and use combinations when order doesn’t matter. c)you can use permutations when order doesn’t matter and use combinations when order matters. d)you can use permutations and combinations when order doesn’t matter.

Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents

Aefg - almn. find the ratio of aefg to almn. a)1: 4 b)1: 2 c)2.1 d)4: 1

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