Mathematics B Exam Worksheet - Regents High School Examination, The University Of The State Of New York, 2005 Page 6

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18 Which equation has imaginary roots?
Use this space for
computations.
(1) x(5 + x) = 8
(3) x(x + 6) = –10
(2) x(5 – x) = –3
(4) (2x + 1)(x – 3) = 7
x
19 The graphs of the equations y = 2
and y = –2x + a intersect in
Quadrant I for which values of a?
(1) 0 < a < 1
(3) a ≥ 1
(2) a < 1
(4) a > 1
20 In the accompanying diagram,
is tangent to circle O at R,
PR
, and
.
QS
OR
PR
OR
y
P
(0,1)
Q
θ
R
x
(–1,0)
S
O
(1,0)
(0,–1)
Which measure represents sin ?
(1) SO
(3) PR
(2) RO
(4) QS
[6]
Math. B – June ’05

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