2. Evaluate the piecewise function for the given value of x. (2V2, > 4
f(x) = { 2, 0 < x <4
-7, x < 0
f(3) =?
O A 2V3
O B. 6
O c. -7
D. 8

What is the length of the midsegment of a trapezoid with bases of length 15 and 25 ?

Which of the following is the major negative aspect of crossover designs for research studies? a. prohibitive cost b. residual effects c-subject drepout d. incomplete randomization e. large sample size required

Need ! a certain ultraviolet ray has a frequency of 1 × 1016 hz, and a certain infrared ray has a frequency of 2 × 1012 hz. which of the following is true? a. the frequency of the ultraviolet ray is fifty thousand times the frequency of the infrared ray. b. the frequency of the infrared ray is fifty thousand times the frequency of the ultraviolet ray. c. the frequency of the ultraviolet ray is five thousand times the frequency of the infrared ray. d. the frequency of the infrared ray is five thousand times the frequency of the ultraviolet ray.