Answer:
1/2
Step-by-step explanation:
there are two results since there is heads and tails
\left[x \right] = \left[ -1+\frac{\left( -7\right) \,y}{4}\right][x]=[−1+4(−7)y] totally answer
From the attached graphic:
e = c*h/wavelength therefore,
wavelength = c*h / e
wavelength = 299,792,458 * 6.62606957e-34 / 3.38x10^-19
wavelength = 5.8771e-7 meters