The figure below shows parallel lines cut by a transversal:

which statement is true about ∠1 and ∠2?
∠1 and ∠2 are congruent because they are a pair of vertical angles.
∠1 and ∠2 are congruent because they are pair of corresponding angles.
∠1 and ∠2 are complementary because they are a pair of vertical angles.
∠1 and ∠2 are complementary because they are pair of corresponding angles.

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.

Jonah runs 3/5 miles on sunday and 7/10 mile on monday. he uses the model to find that he can ran a total of 1 mile . what mistake does jonah make

Select all of the quadrants that the parabola whose equation is y=√x-4 (principal square root) occupies. i ii iii iv