Sound waves can be ranked by their intensity, I, given in the formula below, where r is the distance from the source of a sound with a power output of P.

The fraction 7/9 is equivalent to a percent that is greater than 100%. truefalse

Solve for x where 0 equation: cot^2x+2cotx+1=0

Adolphin is swimming with her friend. the dolphin jumps to a height of 4.54.54, point, 5 meters above the surface of the water as her friend swims 9.89.89, point, 8 meters directly below her. what is the position of the dolphin's friend relative to the surface of the water? meters