The sum of three numbers is 27,the second number is thrice the first while the third is twice the first. Find their average

Which graph represents the solution of the inequality?

Which undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x, y) ?

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)