SAT数学练习题第8套 含答案详解

　　SAT考试数学练习题第八套 SAT problem solving practice test 8

　　1. 3x + y = 19 , and x + 3y = 1.
Find the value of 2x + 2y

　　A. 20
B. 18
C. 11
D. 10
E. 5

　　2. The price of a cycle is reduced by 25 per cent. The new price is reduced by a further 20 per cent. The two reductions together are equal to a single reduction of

　　A. 45%
B. 40%
C. 35%
D. 32.5%
E. 30%

　　3. x and y are integers
x + y < 11 , and x > 6
What is the smallest possible value of x - y ?

　　A. 1
B. 2
C. 4
D. -2
E. -4

　　4. If x5y4z2 <0 , which of the following must be true?

I xy <0
II yz <0
III xz <0

　　A. I
B. II
C. III
D. I and II
E. None

　　5. BCD is a line segment and Angle BAC = Angle ACB ; Angle ACD = ?

　　A. 140
B. 100
C. 120
D. 60
E. it cannot be determined from the information given

　　6. Which of the following integers is in the solution set of │1 – 3x│ < 5 ?

I -1
II 1
III 2

　　A. I only
B. II only
C. III only
D. I and II only
E. I, II and III

　　7. In a certain village, m litres of water are required per household per month. At this rate, if there are n households in the village, how long (in months) will p litres of water last?

　　A. p /mn
B. mn / p
C. mp / n
D. np / m
E. npm

　　8. In the figure below, what is the slope of line l ?

　　A. - 3
B. - 1/3
C. 0
D. 1/3
E. 3

　　9. What digit appears in the units place in the number obtained when 2320 is multiplied out?

　　A. 0
B. 2
C. 4
D. 6
E. 8

　　10. Radius of circle center O is 3 times the radius of circle center C.

Angle ACB = Angle POQ

　　If the shaded area of circle C is 2 then what is the area of the shaded part of circle O ?

　　A. 6
B. 12
C. 18
D. 36
E. 3/2