What is the percentage of profit when $240 becomes $270

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).

Which best explains why this triangle is or is not a right triangle ?

True or false? the sum of the differences (% - 7) is never zero for any distribution consisting of n observations.