What is the area of the shaded region between the two z scores indicated in the diagram

The decibel level of sound is 50 db greater on a busy street than in a quiet room where the intensity of sound is watt/m2. the level of sound in the quiet room is db, and the intensity of sound in the busy street is watt/m2. use the formula , where is the sound level in decibels, i is the intensity of sound, and is the smallest sound intensity that can be heard by the human ear (roughly equal to watts/m2).

Which equations represents circles that have a diameter of 12 units and a center that lies on the y-axis? check all that apply

What is x and y intercepts for y=x+7