Simplify (84)−16. a 8−64 b 8−20 c 8−12 d 8−4

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).

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

How do you convert 1.27 to a percentage