13+39-2-10-6 power2 orders of operation

What properties allow transformation to be used as a problem solving tool

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)

Standard deviation of 19,29,21,22,23