Replace the Cartesian equation with an equivalent polar equation.xy = 1
A. 2r2 sin ? cos ? = 1
B. r sin 2? = 2
C. 2r sin ? cos ? = 1
D. r2 sin 2? = 2
Answer: D
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Subtract and simplify. Write the answer as a mixed number as needed.15
- 6
A. 8
B. 9
C. 8
D. 7
Find an equation for the hyperbola described.Vertices (
, -3) and (- 
, -3); asymptotes 
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Refer to the figure in which O is the center of the circle, 
is a tangent, m?PCE = 20° m?Boc = 80°, PE = 10 ft, PD = 12 ft, ER= 4 ft, and BR= 5 ft.
Find DC.
Out of 30 job applicants, 11 are female, 17 are college graduates, 7 are bilingual, 3 are female college graduates, 2 are bilingual women, 6 are bilingual college graduates, and 2 are bilingual female college graduates.How many women who are not college graduates are bilingual?
A. 9 B. 0 C. 2 D. 11 E. none of these