2a2-3ab+b2)(2a2+3ab+b2)

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

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16