You are stationary on the ground and are watching a bird fly horizontally towards you at a rate of −2 m/s. The bird is located 20 m above your head. How fast does the angle of elevation of your head change when the horizontal distance between you and the bird is 110 m?

17. a researcher measures three variables, x, y, and z for each individual in a sample of n = 20. the pearson correlations for this sample are rxy = 0.6, rxz = 0.4, and ryz = 0.7. a. find the partial correlation between x and y, holding z constant. b. find the partial correlation between x and z, holding y constant. (hint: simply switch the labels for the variables y and z to correspond with the labels in the equation.) gravetter, frederick j. statistics for the behavioral sciences (p. 526). cengage learning. kindle edition.

How long does it take natsumi to clean up after she is done? table: .area time30. 245. 2.7560. 3.5

What is the measure of one interior angle of a pentagon