Simplify each expression -1+3x^2-9y+2x+6y-3 5y-3x+2x^2+10-3y-2x^2 4x^2+9y-5-3x^2-5y-3+2x 3x^2+7y+3x-2y+2-y

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 expression is equivalent to 4 square root 6 divided by 3 root 2

Consider the system: y = 3x + 5 y = ax + b what values for a and b make the system inconsistent? what values for a and b make the system consistent and dependent? explain