Find the value of each square root by use of a calculator. Each number is approximate. radical 0.8095

answers:
A)0.90
B)0.900
C)0.9000
D)0.6553

The graph shows the decibel measure for sounds depending on how many times as intense they are as the threshold of sound. noise in a quiet room is 500 times as intense as the threshold of sound. what is the decibel measurement for the quiet room? 20 decibels28 decibels200 decibels280 decibels