Mathematics practise english 2

Tham khảo tài liệu 'mathematics practise english 2', ngoại ngữ, anh ngữ phổ thông phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | GED MATHEMATICS PRACTICE QUESTIONS Answers and Explanations 1. c. Danny earned a total of 40 252. To find the number of hours Erica would take to earn 252 divide 252 by . 7. d. If x is replaced by the answer choices only 2 and -3 make the expression true. 2 2 2 - 6 0 -3 2 -3 - 6 0 4 -4 0 9 -3 - 6 0 9 -9 0 0 0 0 0 8. a 2b a b c. Since mZACB 90 and mZCAD 40 then mZB 180 - 90 - 40 50 . In BCD mZCDB 90 and mZB 50 . Therefore mZDCB 180 - 90 - 50 40. 3. e. If the class has x students and 5 students are absent then x - 5 students are present xxỹ5- 4. b. If the tank is -y full it is 3 empty. Let x the capacity of the tank 2 x 16 so x 16 2 16 X 3 24. c. To find the perimeter of the figure find the sum of the lengths of its sides. 2a a b 2a b a 2b 6a 4b 9. A 322 square feet 23 feet e. Let x the width of the room 23x 322 x 322 23 14. Perimeter 23 14 23 14 74 feet. c. Let x the length of the ramp. Use the Pythagorean theorem to obtain the equation x2 122 162 144 256 400 x V400 20 a. The perimeter of the figure is x 2y 3x - y 2x 3y 5x y 11x 5y. 6. c. 48 half-pints 24 pints. Since 8 pt. 1 gal. 24 pt. 3 gal. 3 . 445 GED MATHEMATICS PRACTICE QUESTIONS 11. d. Set up an equation with Oliver s money as the unknown and solve. Oliver x Henry 5 x and Murray 5 x. Therefore x 2 5 x 85 x 10 2x 85 3x 10 85 3x 75 x 25 12. IF YOUR TAXABLE INCOME IS At Least But Not More Than Your Tax Is 0 3 499 2 of amount 3 500 4 499 70 plus 3 of any amount above 3 500 4 500 7 499 100 plus 5 of any amount above 4 500 7 500 250 plus 7 of any amount above 7 500 d. 5 800 - 4 500 1 300. Tax is 100 5 of 1 300 100 1 300 100 65 165. 13. e. You cannot compute the cost unless you are told the number of days that the couple stays at the bed and breakfast. This information is not given. 14. c. mZCBD 125 mZABC 180 - 125 55 mZA mZABC 90 mZA 55 90 mZA 90 - 55 35 15. c. Let n number. Then n2 square of a number and n2 n 4 60. b. Meat department sales 2 500 Dairy department sales 1 500 Difference 1 .