sin(kx) has period 2π/k
frequency = 1/period
as for speed, I have no idea. speed = frequency * wavelength, and you have given no indication of distance, only time -- and that does not even involve any units.
Or, maybe x is distance, not time, in which case the time info is missing.
Equation y=5 sin(3x-4) determine the freguency,speed,period of waves
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