015 Q 12 (a) Mean = 55 kg, median = 52 kg, range = 39 kg (b) Let kg and kg be the
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HKDSE Core Math 2015 Paper 1 - WordPresscom
015 Q 12 (a) Mean = 55 kg, median = 52 kg, range = 39 kg (b) Let kg and kg be the
2015 HKDSE Mathematics (CP) Level 5 Samples - 香港考試及
our answers in the spaces provided in this Question- Answer Book Do not write in the margins
2015-DSE-MATH-CP-1-1pdf - DSEPP
our answers in the spaces provided in this Question- Answer Book Do not write in the margins
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HKDSE Core Math 2015 Paper 1 (Solutions)
1 For official marking scheme, please refer to HKEA publications.1. HKDSE 2015 Q.1
2. HKDSE 2015 Q.2
3. HKDSE 2015 Q.3
4 "" """"-ൌ͵-ͳ
4. HKDSE 2015 Q.4
5. HKDSE 2015 Q.5
(a) െ͵ݔ4ǡ- "" " ݔͳ͵
(b) 46. HKDSE 2015 Q.6
HKDSE Core Math 2015 Paper 1 (Solutions)
27. HKDSE 2015 Q.7
Let ݔ be the number of apples owned by Billy.
8. HKDSE 2015 Q.8
ס Aൌס ס AൌסThus, ס
In ȟ, סס
Thus, ס
ס AסAൌס9. HKDSE 2015 Q.9
(a) Let ߠ Therefore, the angle of the sector is ͷι.10. HKDSE 2015 Q.10
(a) Let 3ൌܾܽ݊, where ܽ and ܾSolving, we have ܽൌ-- and ܾ
HKDSE Core Math 2015 Paper 1 (Solutions)
311. HKDSE 2015 Q.11
B- -- െͳെξͷ
Thus, the claim is disagreed.
12. HKDSE 2015 Q.12
(a) Mean ൌͷͷ , median ൌͷ- , range ൌ͵ͻ (b) Let ܽ and ܾ be the weights of the two students, where ܾܽCase 1 : ܽ
Then ܾ
Under this case, ܾ
Then ܽ
Thus, the weights of the two students are 52 kg and 80 kg.HKDSE Core Math 2015 Paper 1 (Solutions)
413. HKDSE 2015 Q.13
(a) In ȟA and ȟ, ס AൌסAൌ (given)
Aൌ (property of square)
ȟA؆ (b) By (a), we have סAൌס ס Aൌͳͺ-ιെסAെסAൌͻ-ιെסThus, ȟ
is a right-angled triangle.14. HKDSE 2015 Q.14
(a) (i) 3" 01ൌ-͵ͳEquation of L : ݕെͳͳൌ͵
(ii) Equation of the circle passing through P, Q and R :Thus, the required diameter is 50.
HKDSE Core Math 2015 Paper 1 (Solutions)
515. HKDSE 2015 Q.15
Relative to other students, David performs better in the Science examination than in theMathematics examination.
Thus, the claim is correct.
16. HKDSE 2015 Q.16
(b) 4 "" """"-ൌͳെସଽଵହൈଷଽ