What percent is the shaded portion of the entire diagram? A bar diagram with 9 shaded squares and 11 unshaded squares.

Answer these questions showing your work plz

Find the gradient of f(x,y,z)equals=left parenthesis x squared plus y squared plus z squared right parenthesis superscript negative 1 divided by 2 baseline plus ln left parenthesis x right parenthesis x2+y2+z2−1/2+ln(xyz) at the point left parenthesis negative 2 comma 1 comma negative 2 right parenthesis(−2,1,−2).

If angle 2=3x +1 and angle 3=2x +4what is angle 2