Which of the following is considered a biased estimator? A. range

B. proportion

C. mean

D. variance

20 da is equal to a. 2,000 cm. b. 2 m. c. 20,000 cm. d. 20,000 mm

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

The function y= x - 4x+ 5 approximates the height, y, of a bird, and its horizontal distance, x, as it flies from one fence post to another. all distances are in feet. complete the square to find and interpret the extreme value (vertex). select two answers: one extreme value and one interpretation.