So i am confused with the u^(1/2) and the -2u^(-1/2).

i said u/sqrt u is equal to u*sqrt u/u which = sqrt(u) so i get that is u^(1/2). but can't you rationalize the 2/sqrt(u) also? would it not be 2*sqrt*u)/u? since nothing cancels is it better not to rationalize it or what?

In the coordinate plan (-6,9) b (3,9) c (3,3) def is shown in the coordinate plan below

Bobby bought 1.12 pounds of turkey at a cost of 2.50 per pound. carla bought 1.4 pounds of turkey at a cost of 2.20 per pound. who spent more and by much?

Zed is making a centerpiece for his dining room table by putting sand in a cube-shaped vase. the vase is 0.25 meters in length, width, and height. he bought 25 kg of sand. assume the density of dry sand is 1,602 kgm3. what is the volume of the sand that zed purchased? the volume of the sand is approximately m3. enter your answer as the number that correctly fills in the blank in the previous sentence. if necessary, round your answer to six decimal places, like so: 42.536475