According to the study unit, the commutative property means a. the way the numbers are grouped does affect the sum. b. the way the numbers are grouped doesn't affect the sum. c. the order in which you add the numbers does affect the sum. d. the order in which you add the numbers doesn't affect the sum.

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 are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function