Express as a sum of logarithms.log2 xy
A. log2 x + log2 y
B. log1 x + log1 y
C. log2 x - log2 y
D. log1 x - log1 y
Answer: A
Mathematics
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A. 
B. 
C. 
D. 
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Find the radius of convergence of the series. Select the correct answer.
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The letters x and y represent rectangular coordinates. Write the equation using polar coordinates (r, ?).x2 + 4y2 = 4
A. cos2 ? + 4 sin2 ? = 4r B. 4 cos2 ? + sin2 ? = 4r C. r2(4 cos2 ? + sin2 ?) = 4 D. r2(cos2 ? + 4 sin2 ?) = 4
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Solve the problem.An experienced accountant can balance the books twice as fast as a new accountant. Working together it takes the accountants 12 hours. How long would it take the experienced accountant working alone?
A. 30 hr B. 18 hr C. 24 hr D. 6 hr
Mathematics