Calculate Average Speed On a leisurely walk to school, a student takes half an hour to walk 1.0 km. Calculate the student's average
speed in km/h.

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function.a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.