It’s c because none of the c values repeat
Answer:
<em>123</em><em> </em>is 40% of 307.
If there aren’t any degrees and it doesn’t state that the triangle is equilateral then you cannot solve this equation without more information
You gave us the speed and the frequency, and you need the wavelength.
You were also nice enough to remind us that (fqy)x(lng) = speed.
So . . . F x W = 343 m/s
Divide each side by F :
W = (343 m/s) / F
W = (343 m/s) / (240 / s)
W = (343/240) m
<em>W = 1.429 meters</em>
