TAILIEUCHUNG - SAT math essentials part 11

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 .

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