Which is a secondary source about the vietnam war? a) a memoir written by a soldier during the war b) letters written by soldiers who died in vietnam c) an interview with historians who have studied vietnam d) the text of a speech given by the president during the war

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).

Closing a credit card usually _your debt ratio.a. increasesb. decreasesc. improvesd. has no effect on

Rosy waxes 2/3 of her car with 1/4 bottle of car wax.at this rate,what fraction of the bottle of car wax will rosey use to wax her entire car