Mathematics B Exam Worksheet - Regents High School Examination, The University Of The State Of New York, 2005 Page 5

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2
+
i
Use this space for
13 The expression
is equivalent to
+
3
i
computations.
+
7
5
i
6
5
i
(1)
(3)
10
8
+
+
i
6
7
i
(2)
(4)
8
10
14 For which quadratic equation is the axis of symmetry x = 3?
2
2
(1) y = –x
+ 3x + 5
(3) y = x
+ 6x + 3
2
2
(2) y = –x
+ 6x + 2
(4) y = x
+ x + 3
15 A crate weighing w pounds sits on a ramp positioned at an angle of
with the horizontal. The forces acting on this crate are modeled by
the equation Mw cos = w sin , where M is the coefficient of friction.
What is an expression for M in terms of ?
(1) M = tan
(3) M = sec
(2) M = cot
(4) M = csc
2
1
=
16 If
3
, what is the value of x?
x
( ) a
a
2
(1) 1
(3) –3
(2) 2
(4) –1
5
17 What is the third term in the expansion of (cos x + 3)
?
2
3
(1) 90 cos
x
(3) 60 cos
x
2
3
(2) 270 cos
x
(4) 90 cos
x
[5]
[OVER]
Math. B – June ’05

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