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SAT模拟考试题:SAT数学练习题(14)

2016-08-11 16:53:56来源:网络

  The number of old colonials will be 23 - 23 = 0, and the total number of colonials will be 40 + 0 = 40.

  The total number of houses will be the total number of ranches + the total number of colonials, 30 + 50 = 70. We can rewrite the table: HousesOldNewTotal

  Ranch23730

  Colonial04040

  Total234770

  The percentage of new ranches will be (7 / 70)·100 = 10%

  Question #5: If one of the houses from the previous question is randomly selected, what is the probability that the selected house is a ranch?

  (a) 1/10

  (b) 4/7

  (c) 3/7

  (d) 0

  (e) 23/70

  Answer: The number of ranches is 30 and the total number of houses is 70, so the probability is 30/70 = 3/7.

  Question #6: The AB side of the ABCD trapezoid is 4 and the BC side is 3. What is the area of the triangle ABD?

SAT模拟考试题:SAT数学练习题(14)

  (a) 4

  (b) 7/2

  (c) 9/2

  (d) 6

  (e) 7

  Answer: The area of the ABD triangle is 1/2·AB·h, where h is the height from D onto AB, ED.

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本文关键字: SAT模拟考试 SAT数学

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