Write the number in scientific notation.86.223
A. 8.6223 × 101
B. 8.6223 × 10-2
C. 8.6223 × 102
D. 8.6223 × 10-1
Answer: A
Mathematics
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A. 
B. -4
C. 2
D. - 
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Use trigonometric identities to find the exact value.
A. - 
B. - 
C. -2
D. - 
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Tell whether or not the relation is a function.{(-6,-9), (-5,-5), (-2,1), (2,-2)}
A. Yes B. No
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Graph the ellipse and locate the foci.4x2 = 36 - 9y2 
A. foci at (2
, 0) and (-2
, 0)
B. foci at (0, 
) and (0, -
)
C. foci at (
, 0) and (-
, 0)
D. foci at (
, 0) and (-
, 0)
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