How many times as large is the approximate radius of mercury atom, 1.5 x 10 meter, as the approximate radius of a hydrogen atom, 2.5 x 10

Polygons efgh and e′f′g′h′ are shown on the coordinate grid: what set of transformations is performed on efgh to form e′f′g′h′? a. a translation 1 unit to the left followed by a 90-degree counterclockwise rotation about the origin b. a translation 1 unit to the right followed by a 90-degree counterclockwise rotation about the origin c. a 90-degree clockwise rotation about the origin followed by a translation 2 units to the right d. a 90-degree clockwise rotation about the origin followed by a translation 2 units to the left

What is 1/2 x (6 x 4)+3 + 2 show your work

State one method by which you can recognize a perfect square trinomial.