Use the diagram shown.



if ∠1 ≅ ∠3, which conclusion can be made?

a.

a  ∥  b

b.

c  ∥  d

c.

c  ⊥  a

d.

b  ⊥  d

Find two rational expressions that have the difference of 2-n/n-4

What is the gcf of 20c^3-5c^4+30c^6

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)