Simplify. Write your answers in the form of a+bi, where a and b are real numbers.
A. 
+ 
i
B. - 
+ 
i
C. - 
- 
i
D. 
- 
i
Answer: A
Mathematics
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Graph the pair of parametric equations with the aid of a graphing calculator.x = 5 cos 2t + 4 cos 6t, y = 5 sin 2t - 4 sin 6t, 0 ? t ? ?
A. 
B. 
C. 
D. 
Mathematics
Solve. Write results using scientific notation.Assume that the volume of the earth is 4.0 x 1014 cubic meters and the volume of a bacterium is 3.4 x 10-16 cubic meters. If the earth could be filled with bacteria, how many would it contain?
A. 1.18 x 10-31 bacteria B. 1.18 x 1031 bacteria C. 1.18 x 10-30 bacteria D. 1.18 x 1030 bacteria
Mathematics
Perform the operations and simplify.
?
?
Assume that no denominators are 0.
?
A. 
B. ?
C. ?
D. ?
Mathematics
Simplify the exponential expression.
A. -12,500
B. 5
C. 
D. 
Mathematics