Cristina’s playlist has several different types of music. It contains jazz (4 songs), rock (5 songs), classical (2 songs), and show tunes (6 songs). She chooses one song at random to play. How many possible outcomes are in the sample space? 5

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).

If you are trying to move an attached term across the equal sign (=), what operation would you use to move it?

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827