Ordinary level 2025 BAEBOC mathematics guide
Ordinary level 2025 BAEBOC mathematics guide
3x + x + 500000 + x = 5000000
5* + 4500 000
7. a) n( A n B‘ ) = 21– x, n( A‘ n B ) =
17 – x
b) x = 9
8. a)r1W =^,r1(13) = 3
=
2.i)a) AT BA is isosceles , AST = 65°
b) OBT = 90° => OBA = 90– 65 = 25°
c) ACB = ABT = 65°
x = 900 000 CFA
Eldest child = 2700 000 FCFA
Middle child = 1400 000 CFA
2. a) r = V132 – 122 = 5cm
b) voi =ixy x 12 x 52 = 244.4 cm3 ii)a)
x–22
c)i±vi± = (Vioy r)3 V = 1955.2 cm3 15
3. (a) 2Zx+4 = 23X => x = 4 9.a ) t= 3.6
b) 15x + 18 = 2x => z = –—13 bu \) 9 = 47 ~pr r2 ?
0 3 0 0
3 0 2 0
0 2 0 1
1 0 0 2
lO.a ) x = ~ = — = 4.73 b) AB = V1602 + 1202 = 200 km
c) bearing 60 + tan–1(\—160‘/) = 96.9
4
– 3 ) I f 100
b) median = 5
b) 5
SECTION B Area ABC (I)2
l.i)a) VAT=~j x 32000 000 = 640 OOOfrs
b) Balance = 32 000 000– 640 000 =
31 360 OOOfrs
Hi)
Area ADE
c) 2
Area ABO
—9 x 6 = 16.6 cm 2
5. aMS = ( 47)
b) direction =
3
-0
x 40 45 50 55 60 70 80
c) Remaining = 31 360 000– 1985 000 = 29
–375000
y 35 39.2 41 41.1 40 35 27.5
tan‘ 1(– + 180° = 150.2°
c) 7y = —4x + 23
‘ (– 1 –o1)
b) P‘(0, 6), Q’(-2, 6), R'(–2, 4)
ii) lOx + 9y = 85 (0 b) graph
.10x + 9y = 85 («) c) 32 km/pg
6. a
Solving (i) and (ii) gives x = 4, y = 5 d) 53 kmpg
