For the given algebraic fraction, complete parts 1 and 2.

57x^5 / 19x^2

Simplify the algebraic fraction. In your final answer, include all of your work.
Determine the excluded value(s) of the variable. In two or more complete sentences, explain how you determine the excluded value and why it cannot be a possible value for the variable.

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.

Find the coordinates of point x that lies along the directed line segment from y(-8, 8) to t(-15, -13) and partitions the segment in the ratio of 5: 2.

Is the figure congruent? yes or no?