Use the properties of equality to show that the equation 6x + 3= 27 is equivalent to the equation 2x = 8

What’s the numerical coefficient of 6xy

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).

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°