Determined to finish her milkshake before Diego, Lin now drinks her 12 ounce milkshake at the rate of 1/3 ounce per second. Diego starts with his
usual 20 ounce milkshake and drinks at the rate of 2/3 ounce per second.
After how many seconds will Lin have the same amount of milkshake left as
Diego?

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.

Ivan and jeff buy a package of 8 pens for $4.00. ivan wants 5 of the pens, and jeff wants 3.how much should each student pay?

What are the values of each variable in the diagram below?