Solve the problem.Find parametric equations for the normal line to the surface 
at the point 
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Express the number in scientific notation.0.0000066716
A. 6.6716 × 10-7 B. 6.6716 × 106 C. 6.6716 × 10-5 D. 6.6716 × 10-6
Mathematics
Write the complex number in rectangular form using exact values if possible. Otherwise, round to one decimal place.5(cos 120° + i sin 120°)
A. 
+ 
i
B. - 
+ 
i
C. - 
+ 
i
D. 
+ 
i
Mathematics
Find the probability.When a single card is drawn from an ordinary 52-card deck, find the probability of getting the 7 of diamonds.
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression. Use absolute value if necessary.(a6)1/6
A. a
B. 
C. 
D. a12
Mathematics