Annie walks 15 feet away from her house and places a mirror on the ground. she backs 4 feet away from the mirror so that she can see the tip of the roof. annie's eyes are 5 feet above the ground. annie and the house are both perpendicular to the ground. the angles between the top of the house, the mirror, and the ground and between annie's eyes, the mirror, and the ground are congruent as shown in the image below: image depicts a mirror on the ground between a person and a house. the mirror is 4 feet away from the person and 15 feet away from the house. what is the height of the house? show your work and explain your reasoning in complete sentences.

Is the following relation a function? x y 1 4 −1 −2 3 10 5 16 yes no

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.

The data in the table represent the height of an object over time. which model best represents the data? height of an object time (seconds) height (feet) 05 1 50 2 70 3 48 quadratic, because the height of the object increases or decreases with a multiplicative rate of change quadratic, because the height increases and then decreases exponential, because the height of the object increases or decreases with a multiplicative rate of change exponential, because the height increases and then decreases