A building in the shape of a rectangular pyramid is used to store construction stones. The building has a volume of 21000 ft3. A new building is being designed. It will also be in the shape of a rectangular pyramid, but compared to the existing building, the length of the base will be scaled by a factor of 23 and the width will be scaled by a factor of 53. The height of the new building will be scaled such that the volume of the new building will be the same as the existing building. What scale factor will be used for the height of the new building?

To find the extreme values of a function f(x. y) on a curve x-x(t), y y(t), treat f as a function of the single variable t and use the chain rule to find where df/dt is zero. in any other single-variable case, the extreme values of f are then found among the values at the critical points (points where df/dt is zero or fails to exist), and endpoints of the parameter domain. find the absolute maximum and minimum values of the following function on the given curves. use the parametric equations x=2cos t, y 2 sin t functions: curves: i) the semicircle x4,y20 i) the quarter circle x2+y-4, x20, y20 b, g(x, y)=xy

Seymour is twice as old as cassandra. if 16 is added to cassandra’s age and 16 is subtracted from seymour’s age, their ages become equal. what are their present ages? show !

25 ! i need asap! ! ill mark brainliest!