Select the correct answer.
Which transformation will always map a parallelogram onto itself?
A.
B.
C.
a 90° rotation about its center
a reflection across one of its diagonals
a 180° rotation about its center
D.
a reflection across a line joining the midpoints of opposite sides

Alake near the arctic circle is covered by a 222-meter-thick sheet of ice during the cold winter months. when spring arrives, the warm air gradually melts the ice, causing its thickness to decrease at a constant rate. after 333 weeks, the sheet is only 1.251.251, point, 25 meters thick. let s(t)s(t)s, left parenthesis, t, right parenthesis denote the ice sheet's thickness sss (measured in meters) as a function of time ttt (measured in weeks).

In the diagram of circle a what is m

Sue's average score for three bowling games was 162. in the second game, sue scored 10 less than in the first game. in the third game, she scored 13 less than in the second game. what was her score in the first game?