Which of the following is not an example of a pattern that repeats itself? a) a person’ age b) the phases of the moon c) the rising and falling of the tides d) the changing of the seasons

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)

Iwill give you ! what is the measure of ∠v ?

Two numbers have a sum of -19. one number is x. what expression represents the other number?