Mathematics 2009 | Study Mode

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Question 91
A
y = 2 + 7x + 4x2
B
y = 2 - 7x + 4x2
C
y = 2 + 7x - 4x2
D
y = 2 - 7x - 4x2
Explanation
x = -2 or x = \(\frac{1}{4}\)

(x + 2)(4x - 1) = 0

y = 2 - 7x - 4x2

Correct option: D
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Question 92
A
47o
B
52o
C
56o
D
99o
Explanation
TXY = XTY = 47o(Basa angle of an isosceles \(\bigtriangleup\))

< TYZ = 94o

no = 180 - (94o + 34o)

= 180o - 128o

= 52o

Correct option: B
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Question 93
A
80
B
95
C
100
D
115
Explanation
\(\begin{array}{c|c} Mark & No. of Candidate\\\hline 60 & 40\\ 70 & 25\\ 80 & 15\\ 90 & 10 \\100 & 5 \\\hline & 95 \end{array}\)

Correct option: B
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Question 94
A
45
B
50
C
60
D
75
Explanation
Angle of apple = 360 - 315 = 45o

No. of apple = \(\frac{45}{360} \times 400\)

= 50

Correct option: B
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Question 95
A
18%
B
28%
C
36%
D
50%
Explanation

Explanation not provided, please join discuss, your contributions are welcomed


Correct option: B

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