The mean of the numbers 15, 21, 17.26. 18,29 is 21. Calculate the standard deviation of the
numbers

Which of the following represents the range of the graph of f(x) below

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2

Find a parametrization for the curve「and determine the work done on a particle moving along γ in r3 through the force field f: r^3--r^3'where f(x, y,z) = (1,-x, z) and (a) im (γ) is the line segment from (0,0,0) to (1,2,1) (b) im (γ) is the polygonal curve with successive vertices (1,0,0), (0,1,1), and (2,2,2) (c) im (γ) is the unit circle in the plane z = 1 with center (0,0,1) beginning and ending at (1,0,1), and starting towards (0,1,1)