Y varies jointly as x and z, and inversely as w: y=3 when x=-2, z=6, and w=12.

•Write the equation that represents this relationship.
•What is the constant?

Look at this expression. a3b3c a-3b-3c-1 which of the following is the simplest form of the expression above?

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.

What is the result of the following division?