Write an expression to represent: Four less than the quotient of a number xxx and 555.

Find the area of the regular hexagon if a side is 20 cm.

Find an bif a = {3, 6, 9, 12) and b = {2, 4, 6, 8, 10).

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