What is the greatest integer that always divides the differnces of the squares of any two different positive odd integers

Jeffery conducted a survey in his school and found that 30 of the 50 eighth grade students' favorite subject is mathematics. based on the results, jeffery concluded that out of the 200 students in his school, 120 students' favorite subject is mathematics. select the statement that is true about jeffery's conclusion. a. jeffery's conclusion is not valid because the sample was biased since only 200 students were surveyed. b. jeffery's conclusion is valid because the sample was random since all of the students were eighth grade students. c. jeffery's conclusion is valid because the sample was random. d. jeffery's conclusion is not valid because the sample was biased since all of the students were eighth grade students.

During a wright loss challenge your friend goes from 125 pounds to 100 pounds. what was the percent weight loss

Consider the sequence below. 3 , 1 , 1/3 , 1/9 , select the explicit function which defines the sequence.