The speed of a title wave in meters/second is given by the square root of the product of the acceleration due to gravity on earth (9.8meters/second^2) and the depth of the ocean in meters. if the ocean is 500 meters deep what is the speed of the wave

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Isuck at math ; ^; m a student solved this problem and said the answer is 3 feet. chase had a roll of ribbon that contained 7 7/8  feet of ribbon. he cut off one piece that was 3 5/8  feet long and another piece that was 1 1/4  feet from the roll. how much ribbon was left on the roll? is the student's answer reasonable? yes, the answer is reasonable. no, the answer is not reasonable. it should be about 2 feet. no, the answer is not reasonable. it should be about 13 feet. no, the answer is not reasonable. it should be about 4 feet.

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?