Identify the pair of numbers that does not belong with the other three. explain.

9/6, 6/9. 4, 1/4. 3/5, 5. 2/7, 7/2

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)

Is the response to the survey question "did you smoke in the last week question mark "response to the survey question "did you smoke in the last week? " a discrete random variable, a continuous random variable, or not a random variable?