Whoever answers first gets branliest Jenny accidentally drops a doll from rest out of a high window in a tall building. The doll falls for 3.6 seconds. Neglecting air resistance, the final velocity of the doll is m/s (g=-9.8m/s^2) A.-42
B.52
C.-12
D. 23
E.-35

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.

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

Over the last 8 nights, elyse earned the following in tips: {105, 120, 84, 95, 100, 132, 140}. if she earns $140 a night for the next four nights, which measure of center would increase more, the mean or median?