What is the wave speed of a wave that has a frequency of 200 hz and a wavelength of 0.40 m?

Which logarithmic equation is equivalent to the exponential equation below? e^a=55(you will receive 34 points)

What would the rule be for the reflection of y=-3

Determine the common ratio and find the next three terms of the geometric sequence. 10, 2, 0.4, a. 0.2; -0.4, -2, -10 c. 0.02; 0.08, 0.016, 0.0032 b. 0.02; -0.4, -2, -10 d. 0.2; 0.08, 0.016, 0.0032 select the best answer from the choices provided a b c d