Consider a function f(x, y) at the point (6,6). At that point the function has directional derivatives of 4/sqrt(85) in the direction (parallel to) (7,6) and 2/sqrt(85) in the direction (parallel to) (6,7) the gradient of f at the point (6,6) is? (,)

Which of the following is a function? a.) {(-2, -4/5), (-1,-,,-1)} b.) {(-2,,1/,3/,1)} c.) {(-22)} d.) {(-21)}

The point of intersection of the diagonals of a rectangle is 4 cm further away from the smaller side then from the larger side of the rectangle. the perimeter of the rectangle is equal to 56 cm. find the lengths of the sides of the rectangle. 16 points answer quick

Cone a has a surface area of 384 ft2 and cone b has a surface area of 96 ft? . what is the ratio of their volume?