1- If Antonio did ten laps in the pool , how many minutes will it take him? 2-Antonia and Maria each swam laps in a pool. Who has the best time per lap.

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).

Given right triangle xyz, which correctly describes the locations of the sides in relation to

Evaluate cos2θ for cosθ = square root of 3/2