tailieunhanh - The sat skill exam 4

Tham khảo tài liệu 'the sat skill exam 4', ngoại ngữ, anh ngữ phổ thông phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | THE SAT MATH SECTION 16. A wealthy businessperson bought charity auction tickets that were numbered consecutively 5 027 through 5 085. How many tickets did she purchase 17. For some value of x 5 x 2 y. After the value of x is increased by 3 5 x 2 z. What is the value of z - y 18. When a positive integer k is divided by 6 the remainder is 3. What is the remainder when 5k is divided by 3 19. If x- 1 x- 3 -1 what is a possible solution for x 20. If 4 times an integer x is increased by 10 the result is always greater than 18 and less than 34. What is the least value of x 21. A string is cut into two pieces that have lengths in the ratio 4 5. If the length of the string is 45 inches what is the length of the longer string 22. If x - 8 is 4 greater than y 2 then by how much is x 12 greater than y 23. A brand of paint costs 14 a gallon and 1 gallon of paint will cover an area of 150 square feet. What is the minimum cost of paint needed to cover the 4 walls of a rectangular room that is 12 feet wide 16 feet long and 8 feet high 24. How many degrees does the minute hand of a clock move from 5 25 . to 5 47 . of the same day 26. What is the value of 5 below 5 8 1 8 q r .4 1. .2 1 5t. When multiplying two 2 X 2 matrices use the formulas 1 a2 X b a1b1 a2b3 a1b2 a2b4 a3 4. A b4. a3b1 a4b3 a3b2 a4b4 27. If x5 243 what is the value of x 3 28. In the diagram below AB is tangent to circle C at point B. What is the radius of circle C if AC is 20 3 29. Given f x 3x2 2 x - findf 3 . 30. For the portion of the graph shown for how many values of x does f x 0 25. If the operation V is defined by the equation xVy 3x 3y what is the value of 3V4 107 THE SAT MATH SECTION Math Pretest Answers 1. b. To figure out by what amount quantity A exceeds quantity B calculate A - B 8 X 25 - 15 X 10 200 - 150 50. 2. d. Consecutive multiples of 4 such as 4 8 and 12 always differ by 4. If k - 1 is a multiple of 4 then the next larger multiple of 4 is obtained by adding 4 to k - 1 which gives k - 1 4

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