Tham khảo tài liệu 'sat math essentials part 11', ngoại ngữ, ngữ pháp tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | PRACTICE TEST 1 8. a. There are three numbers on the wheel that are less than four 1 2 3 but only one of those numbers 3 is greater than two. The probability of Jenna spinning a number that is both less than 4 and greater than 2 is -8-. 9. e. The volume of a cylinder is equal to nr2h. The volume of the cylinder is 160n and its radius is 4. Therefore the height of the cylinder is equal to 160n n 4 2h 160 16h h 10 The length of an edge of the cube is equal to half the height of the cylinder. The edge of the cube is 5 units. The surface area of a cube is equal to 6e2 where e is the length of an edge of the cube. The surface area of the cube 6 5 2 6 25 150 square units. 10. c. m n is a function definition. The problem is saying m n is the same as m2 - n . If m n is m2 - n then n m is n2 - m. So to find m n m replace n m with the value of n m which is n2- m m n2- m . Now use the function definition again. The function definition says take the value before the symbol square it and subtract the value after the symbol m squared is m2 minus the second term n2 - m is equal to m2 - n2 - m m2 - n2 m. 11. e. V 1 1 -L. -4 -g3- - . . 4x 3 x 1 ox O 1 - 14 8 - 4 4 -47 3 -1 3 2 16x 16 1 -L- .1- 164 2 81 1 814 3. 81 81-4 12. e. Angles e and f are vertical angles so angle e angle f. However angle d and angle j are not alternating angles. These angles are formed by different transversals. It cannot be stated that angle d angle j therefore it cannot be stated that d e f j. 13. a. Melissa s mean time for the first five dashes is 554 25L . Her times in order from least to greatest are and . The middle score or median is . The number that appears most often the mode is . A score of means that the mean will decrease and that the mode will no longer be alone. The mode will now be and . The median however will remain . 14. b. Ap f xy X x x 15. a. If a straight line were drawn through as many of the plotted points as possible .