How many 12 inch rulers will be about the same as a window

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).

In order to be invited to tutoring or extension activities a students performance 20 point higher or lower than average for the

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose