In a volleyball game. Caroline served the ball over the net 16 out of 20 times. What percent did she make over the net?

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).

How many real and imaginary solutions does the equation x^2-3x=-2x-7 have?

How many different triangles can be constructed with the angle measurements of 134° 10° and 36° ?