SAT数学练习题第8套及答案详解

2022-05-22 04:28:49

  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 = ¼ 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

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