Which are partial products for 68 × 43?

choose all answers that are correct.

a.
6 space cross times space 3 space equals space 18

b.
8 space cross times space 3 space equals space 24

c.
8 space cross times space 40 space equals space 320

d.
600 space cross times space 40 space equals space 24 comma 000

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)