Ricardo ran the 400 meter race 3 times . His fastest time was 54.3 seconds. His slowest time was 56.1 seconds. If his average time was 55.0 seconds what was his time for the third race

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).

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

If f(x) = 4x - 3 and g(x) = x + 4, find (f - g) (x)