Q. No.4. Ali is hiking on the hill, whose height is given by f(u, v)=n^2 e^((u+n)/(v+n)). Currently, he is positioned at point (3,5). Find the direction at which he moves down the hills quickly. (5 points) Where n is the product of first and second digit of your arid number e. g. 19-arid-435 take n=4x3=12

99 points at a zoo, the leopard pen has a ring-shaped sidewalk around it. the outer edge of the sidewalk is a circle with a radius of 12 m. the inner edge of the sidewalk is a circle with a radius of 8 m. (1 point for showing all of your work) a. write and simplify an expression for the exact area of the sidewalk. (1 point for the answer) b. find the approximate area of the sidewalk. use 3.14 to approximate π. (1 point for the answer)

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

1: 4 if the wew 35 surfboards at the beach how many were short boards?