Mathematics B Regents High School Examination Worksheet- University Of The State Of New York, 2007 Page 7
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28Use this space for
computations.
=
+
18 The formula
S
20
t
273
is used to determine the speed of sound,
S, in meters per second, near Earth’s surface, where t is the surface
temperature, in degrees Celsius. Which graph best represents this
function?
S
S
t
t
( 1 )
( 3 )
S
S
t
t
( 2 )
( 4 )
19 If 2 + i and 2 − i are the roots of the equation x
− 4x + c = 0, what is
2
the value of c?
(1) −5
(3) −4
(2) 5
(4) 4
2
cos
A
+
20 The expression
sin
A
is equivalent to
sin
A
(1) 1
(3) sec A
(2) sin A
(4) csc A
[7]
[OVER]
Math. B – June ’07
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