2009 - JAMB Mathematics Past Questions and Answers - page 10
91
A
y = 2 + 7x + 4x2
B
y = 2 - 7x + 4x2
C
y = 2 + 7x - 4x2
D
y = 2 - 7x - 4x2
correct option: d
x = -2 or x = \(\frac{1}{4}\)
(x + 2)(4x - 1) = 0
y = 2 - 7x - 4x2
Users' Answers & Comments(x + 2)(4x - 1) = 0
y = 2 - 7x - 4x2
92
A
47o
B
52o
C
56o
D
99o
correct option: b
TXY = XTY = 47o(Basa angle of an isosceles \(\bigtriangleup\))
< TYZ = 94o
no = 180 - (94o + 34o)
= 180o - 128o
= 52o
Users' Answers & Comments< TYZ = 94o
no = 180 - (94o + 34o)
= 180o - 128o
= 52o
93
A
80
B
95
C
100
D
115
correct option: b
\(\begin{array}{c|c} Mark & No. of Candidate\\hline 60 & 40\ 70 & 25\ 80 & 15\ 90 & 10 \100 & 5 \\hline & 95 \end{array}\)
Users' Answers & Comments94
A
45
B
50
C
60
D
75
correct option: b
Angle of apple = 360 - 315 = 45o
No. of apple = \(\frac{45}{360} \times 400\)
= 50
Users' Answers & CommentsNo. of apple = \(\frac{45}{360} \times 400\)
= 50
95
A
18%
B
28%
C
36%
D
50%
correct option: b
Users' Answers & Comments