What is the pattern for 784.5, 78.45, 7.845 what comes next

Which expression calculates the speed in meters per second of an object that travels a distance of 100 m every 20 seconds

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.

Write the percent as a fraction or mixed number in simplest form. 0.8%