What are the coordinates of the point on the directed line segment?

Which number produces a rationale number when multiplied by 1/5

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.

Ade and abc are similar. which best explains why the slope of the line between points a and d is the same as the slope between points a and b?