SAT数学真题精选
1. If 2 x + 3 = 9, what is the value of 4 x – 3
(A) 5 (B) 9 (C) 15 (D) 18 (E) 21
2. If 4(t + u) + 3 = 19, then t + u =
(A) 3 (B) 4 (C) 5 (D) 6 (E) 7
3. In the xy-coordinate (坐标) plane above, the line contains the points (0,0) and (1,2). If line M (not shown) contains the point (0,0) and is perpendicular （垂直） to L, what is an equation of M
(A) y = -1/2 x
(B) y = -1/2 x + 1
(C) y = - x
(D) y = - x + 2
(E) y = -2x
4. If K is divisible by 2,3, and 15, which of the following is also divisible by the numbers
(A) K + 5 (B) K + 15 (C) K + 20 (D) K + 30 (E) K + 45
5. There are 8 ctions of ats in an auditorium. Each ction contains at least 150 ats but not more than 200 ats. Which of the following could be the number of ats in this auditorium
(A) 800 (B) 1,000 包子要蒸多久(C) 1,100 (D) 1,300 (E) 1,700
6. If rsuv = 1 and rsum = 0, which of the following must be true
(A) r < 1 (B) s < 1 (C) u= 2 (D) r = 0 (E) m = 0
7. The least integer of a t of concutive integers (连续整数) is –126. if the sum of the integers is 127, how many integers are in this t
(A) 126 (B) 127 (C) 252 (D) 253 (E) 254
8. A special lottery is to be held to lect the student who will live in the only deluxe room in a dormitory. There are 200 niors, 300 juniors, and 400 sophomores who applied. Each nior’s name is placed in the lottery 3 times; each junior’s name, 2 time; and each sophomore’s name, 1 times. If a student’s name is chon at random from the names in the lottery, what is the probability that a nior’s name will be chon
（A）1/8 (B) 2/9 (C) 2/7 (D) 3/8 (E) 1/2
Question #1: 50% of US college students live on campus. Out of all students living on campus, 40% are graduate students. What percentage of US students are graduate students living on campus
(A) 90% (B) 5% (C) 40% (D) 20% (E) 25%
Question #2: In the figure below, MN is parallel with BC and AM/AB = 2/3. What is the ratio between the area of triangle AMN and the area of triangle ABC
(A) 5/9 (B) 2/3 (C) 4/9 (D) 1/2 (E) 2/9
Question #3: If a2 + 3 is divisible by 7, which of the following values can be a送母亲礼物
(A)7 (B)8 (C)9 (D)11 (E)4
Question #4: What is the value of b, if x = 2 is a solution of equation x2 - b · x + 1 = 0
(A)1/2 (B)-1/2 (C)5/2 (D)-5/2 (E)2
Question #5: Which value of x satisfies the inequality | 2x | < x + 1
(A)-1/2 (B)1/2 (C)1 (D)-1 (E)2
Question #6: If integers m > 2 and n > 2, how many (m, n) pairs satisfy the inequality mn < 100
(A)2 (B)3 (C)4 (D)5 (E)7
Question #7: The US deer population increa is 50% every 20 years. How may times larger will the deer population be in 60 years
(A) (B) (C) (D) (E)
Question #8: Find the value of x if x + y = 13 and x - y = 5.
(A)2 (B)3 (C)6 (D)9 (E)4
Question #9:
US | UK | Medals |
3 | 2 | gold |
1 | 4 | silver |
4 | 1 | 儿童健美操bronze |
| | |
The number of medals won at a track and field championship is shown in the table above. What is the percentage of bronze medals won by UK out of all medals won by the 2 teams公园英文
(A)20% (B)% (C)%本县 (D)% (E)10%
Question #10: The edges of a cube are each 4 inches long. What is the surface area, in square inches, of this cube
(A)66 (B)60 (C)76 (D)96 (E)65 认识植物
Question #1: The sum of the two solutions of the quadratic equation f(x) = 0 is equal to 1 and the product of the solutions is equal to -20. What are the solutions of the equation f(x) = 16 - x
(a) x1 = 3 and x2 = -3 (b) x1 = 6 and x2 = -6
一马当先的近义词(c) x1 = 5 and x2 = -4 (d) x1 = -5 and x2 = 4
芳华在线观看(e) x1 = 6 and x2 = 0
Question #2: In the (x, y) coordinate plane, three lines have the equations:
l1: y = ax + 1
l2: y = bx + 2
l3: y = cx + 3
Which of the following may be values of a, b and c, if line l3 is perpendicular to both lines l1 and l2
(a) a = -2, b = -2, c = .5 (b) a = -2, b = -2, c = 2
(c) a = -2, b = -2, c = -2 (d) a = -2, b = 2, c = .5
(e) a = 2, b = -2, c = 2
