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43. a frequency table is shown for the height’s of 4th graders in a class at riverbend elementary school. what is the probability that a fourth grader in this class is44 inches tall?

46. a bag contains 4 red, 3 green and 2 blue marbles. what is the probability of selecting a green marble and then a blue marble assuming you replace the first marble?

48. sam draws a card and replaces it 20 times from a standard deck of 52 cards. he draws 16 black cards and 4 red cards. what is the experimental probability of drawing a black card?

49. mark has a six-sided number cube. each side is numbered from 1 to 6. what is the probability, expressed as a ratio, that mark will roll a 6?

50. how likely is it that you would pick a pink marble out of a bag of marbles that had green, blue, red, and yellow marbles?

the graph shows the number of tickets sold at a movie theater (x-axis) and the total cost in dollars (y-axis). which coordinate pair shows the unit rate?

22. as low tide came in, the ocean dropped by a rate of 12 inches every 3 minutes. write a rational # describing this rate.

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