In a ball is pendulum, a bullet of mass m is fined with an initial speed, at a wooden block, hanging from a mass less string or length L the wooden block has a mass of M after the collision, the bullet is embedded, in to the wooden block and to get her as one these swing through an arc, eventually geing a peak height of h. find the expression f or, the height h 4 the angle ፀ, the string makes, to its orignal position. at peak height​

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.

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?

Write as a product: ac^2–ad+c^3–cd–bc^2+bd