A vertical line has a run which is
A. 1
B -1
C. undefined
D. Zero

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).

What is the value of x? enter your answer in the box. photo attached.

What describes horizontal cross section of the right rectangle 6m 8m 5m