數學試卷答案 – St. Stephen’s Girls’ College Form 3 Math Mid-Year Exam 2017-18

數學試卷答案 – St. Stephen’s Girls’ College Form 3 Math Mid-Year Exam 2017-18

試卷答案

Section A

1. a) (2m – 5n)(2m + 5n)
   b) (x – 2)(x + 7)
   c) (2x – 5y)(x + 2y)
2. a) \(3.4 \times 10^{-6}\)
   b) \(-2.7 \times 10^{8}\)
3. 1
4. B00001EF₍₁₆₎
5. $28515
6. $3868.5
7. -9.7%
8. a) False
   b) True
   c) False
9. 8
10. Mean = 2.69
    Median = 2.5
    Mode = 1
11. 16.2
12. a) 13
    b) 25%
13. 50°
14. 3.96 cm
15. 6.52 cm²

Section B

16. \(\dfrac{p^{14}}{q^{10}}\)
17. a) x ≥ -73/11
    b) -6
18. y > 15/8
19. a) \(3.99 \times 10^{12}\)
    b) \(3.42 \times 10^{11}\)
    c) The claim is agreed.
20. a) 62.5
    b) x = 78
    c) 66
21. a) –
    b) 19.2
22. a) 60°
    b) –
23. a) 15
    b) 136π cm²
24. 1645 cm³
25. a) $168000 – x
    b) x = 8000
    c) The claim is disagreed.
26. 20/9
27. a) (x – 4)(x² + 4x + 16)
    b) (x + 29)(x – 4)
    c) (x – 4)(2x² + 7x + 3)

St. Stephen’s Girls’ College Form 3 Math Mid-Year Exam 2017-18 試卷