Choose the example of an inverse relationship. a Multiplying by 4 is the inverse of multiplying by -4.

b Multiplying by 4 is the inverse of adding by 4.

c Dividing by 4 is the inverse of multiplying by 4.

d Dividing by 4 is the inverse of multiplying by -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).

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

Which answer choice is it? is it the first ,second, third or fourth giving 40 points for whoever answers correctly you