Six gross of special drawing pencils were purchased for use in a department. if the pencils were used at a rate of 24 a week, the maximum of weeks that the 6 gross of pencils would last is?

A20? -foot ladder is placed against a vertical wall of a? building, with the bottom of the ladder standing on level ground 19 feet from the base of the building. how high up the wall does the ladder? reach?

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way