Mathematics B - Regents High School Examination - The University Of The State Of New York - 2009 Page 4
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28Use this space for
8 The accompanying diagram shows two intersecting paths within a
computations.
circular garden.
5
6
10
x
What is the length of the portion of the path marked x?
1
(1)
8
(3) 3
3
(2) 11
(4) 12
9 If f(x) = 3x − 5 and g(x) = x − 9, which expression is equivalent to
(f ° g)(x)?
(1) 4x − 14
(3) 3x − 32
(2) 3x − 14
− 32x + 45
2
(4) 3x
10 A central angle of a circular garden measures 2.5 radians and intercepts
an arc of 20 feet. What is the radius of the garden?
(1) 8 ft
(3) 100 ft
(2) 50 ft
(4) 125 ft
⎛
⎞
2
−
⎜
⎟
?
11 What is a value of Arc sin
⎝
⎠
2
π
π
(1)
(3)
4
2
− π
− π
(2)
(4)
4
2
[4]
Math. B – Jan. ’09
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