SAT数学备考经典模拟题训练36
导读：在SAT考试的各题型中，对于中国考生来说数学是比较容易得高分的学科，那大家平时就更要抓紧时间复习啦，可不要把优势科目变成劣势，那就得不偿失了！下面小编给大家推荐一些比较典型的数学题，一起来做吧。
>>SAT数学模拟题：SAT数学备考经典模拟题训练36
· 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
解析
o Answer: The number of ranches is 30 and the total number of houses is 70, so the probability is 30/70 = 3/7.
o Answer: The area of the ABD triangle is 1/2·AB·h, where h is the height from D onto AB, ED.
Since DEB angle is 90o and equal to angle BCD, EBCD is a rectangle and ED = BC = 3
The area is (1/2)·4·3 = 6.
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