PLEASE HELP ASAP Geometry ^^^ the answer choices for the first one are
a. P’ is the origin
b. P’ = P
c. PP’ is perpendicular to L

and the second one are
a. AA’ is parallel to L
b. A’ is the point on L closest to A
c. L is the perpendicular bisector of AA’

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.

Bring the fraction a/a-4 to a denominator of 16-a^2

What is the volume of a rectangular crate that has dimensions 9 inches by 9 inches by 1 feet? 1,458 in.3 121.5 in.3 1,012.5 in.3 36 in.3