An ocean wave has a wavelength of 8 m and a frequency of 50 Hz. What is the wave speed? a.1600m/s
b.0.16 m/s
c.400 m/s
d.6.25 m/s

Pls given: q = 7m + 3n, r = 11 - 2m, s = n + 5, and t = -m - 3n + 8. simplify r - [s + t]. m - 2n - 2 -m + 2n - 2 3m - 4n + 14 -3m - 4n + 14 (not this one)

The distance between two points in a map is 6.5cm the scale of the map is 1: 1000. what's the actual distance between the two points in km

In a hospital ward, there are 15 nurses and 3 doctors. 9 of the nurses and 1 of the doctors are female. if a person is randomly selected from this group, what is the probability that the person is male or a doctor?