Geometry ( WILL GIVE BRAINY) 1) the sun of the measures of the n interior angles of an n- gon is

2) the sum of the measures of the exterior angles of a 25 gon is

3) the sum of the measures of the interior angles of an octagon is

4) the sum of the interior angles of a regular polygon is 720 degrees. How many sides does the polygon have

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 domain of the following expression: 1/(√x)-2

Question 14 (1 point) larry deposits $15 a week into a savings account. his balance in his savings account grows by a constant percent rate.