Tham khảo tài liệu 'sat virtual reality iii explanations phần 4', ngoại ngữ, ngữ pháp tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Now look at the answer choices. The only one that is true is E which states that the median of the scores is equal to the mean. CD H c o p CD Ư 11. C Check the statements one at a time. Start with Statement I. The sum of the measures of the angles of a triangle is 180 degrees and the small triangle has angles measuring a b and 90 degrees. Therefore a b 90 180. Subtracting 90 from both sides leaves you with a b 90 so I is true. Move on to Statement II. Because lines 3 and 4 are parallel and d and a are corresponding angles you know that d a. Now you need to decide whether the sum of the measures of d and c equals 90 degrees. Notice that d and c are part of a large right triangle. Therefore as with Statement I d c 90 180 so d c 90. Since a d you know that a c 90 and that Statement II is also true. Now try Statement III. There is no information that tells you that b is equal to either a or d or that any of the line segments are of equal length. Therefore there is no way of knowing whether b and d are equal. They may be but it is also possible that they are not. Therefore only I and II must be true and the answer is C . 12. C If there are 200 mattresses in the store you can subtract the sum of the twin- full- and king-sized mattresses from 200 to find the number of queen-sized mattresses currently in stock x 200 - 39 67 24 200 -130 70 There are 70 queen-sized mattresses. When there are 70 mattresses of each size there will be 70 X 4 280 mattresses total. There are currently 200 in stock so you need 80 more. 13. D The best way to do this problem is to use common sense. If there were 4 chairs at all 25 tables there would be 100 total seats. If there were 1 table with 2 chairs and 24 with 4 chairs there would be 24 X 4 2 96 2 98 chairs. Therefore for every 1 table with 2 chairs you lose 2 chairs from the sum. The total of 86 chairs in the restaurant is 14 less than the 100-chair maximum. 14 2 7 so there are 7 tables with 2 chairs and 18 tables with 4. Double-check this by
