What is the upper quartile of the data 0,1,2,3,4,5,6,7,8,9,10

Algebraically prove that a clockwise and counterclockwise rotation of 180° about the origin for triangle abc are equivalent rotations.

Wayne has 303 marbles if he gives away 123 of the marbles equally to 3 friends about how many marbles will wayne give each friend? how many marbles does wayne have left?

Which expression has a negative value? 2+12 (-) ) -35-5