數學試卷答案 – St. Stephen’s Girls’ College Form 2 Math Final Exam 2018-19 Paper 2

試卷答案

a) 4
b) 2
36.5 °C
16/a
\(2a^{3}-a^{2}-14a+15\)
(5a – b)(15a – 3b + 1)
A = 3
a) No
b) Yes
c) Yes
a) \(b=\dfrac{a-1}{2c}\)
b) \(c=\dfrac{bx}{4a-b}\)
x = 7/4
y = -1/4
-3
x + y = 72 ….. (1)
x – 8 = y ……. (2)
(or reasonable answers)
a) 8.2 h
b) 8.45h – 8.95h
c) 0.5 h
d) 9.5h – 9.9h (or the fourth class interval)
24
48 mins
1 : 20
8 : 1
9 cm
48
2 km
1 : 0.025 (or 1 : 1/40)
3
60°
72°
36°
x = 48°
y = 84°
9 cm²
4.36 cm
12.0 cm
D
a) \(3\sqrt{a}\)
b) \(5\sqrt{14}\)
58.0°
6.16 cm
4/5 or 0.8
33.0
8.38 cm
cos θ
12.5°
\(\dfrac{1+\sqrt{2}}{2}\)
a) Yes
b) Yes
c) No