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

The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.

Look at the chart showing the results of a baseball player at bat. which is the probability of getting a hit?