Find the product.
A. 
B. 
C. 
D. 
E. 
Answer: C
Mathematics
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Sketch the surface z = f(x,y).f(x, y) = 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.To get a B in biology, Katie must have a mean score of 81 on five lab reports. Scores on the first four lab reports were 92, 77, 79, and 82. What is the lowest score that Katie can get on the last lab report and still receive a B?
A. 71 B. 83 C. 82 D. 75
Mathematics
Simplify the rational expression. If the rational expression cannot be simplified, so state.
A. 
B. 
C. 
D. cannot be simplified
Mathematics
Write the number in standard form.2(cos 270° + i sin 270°)
A. -2i B. -i C. 2i D. -2
Mathematics