Which expression is equivalent to 36x2 − 25? (18x)2 (−5)2 (18x)2 − (5)2 (6x)2 (−5)2 (6x)2 − (5)2

Acircle has a diameter will endpoints of (-2,8) and (6, 4). what is the center of the circle

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?