Solve the equation on the interval [0, 2?).cos2 x + 2 cos x + 1 = 0
A. 
, 
B. 
, 
C. 2?
D. ?
Answer: D
Mathematics
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For what values of x does the series converge absolutely?
A. - 
< x < - 
B. - 
< x ? - 
C. - 
? x < - 
D. - 
< x < - 
Mathematics
Graph the parabola.x2 = 3y
A. 
B. 
C. 
D. 
Mathematics
Rewrite.6% as a decimal
A. 60.0 B. 6 C. 0.06 D. 0.6
Mathematics
(2.6 × 103) ÷ (1.6 × 10-1) = _____ . (Give your answer in correct scientific notation)
A. 1.625 × 103 B. 1625 C. 1.625 × 10-3 D. 1.625
Mathematics