Does 2x<10 have a solution of x=-5?
(Please explain, thank you)

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)

Factor the polynomial by its greatest common monomial factor.

Compute the standard deviation of the following set of data to the nearest whole number. 10, 10, 15, 20, 25