Solve the problem.Miguel invested $54,000 in a certificate of deposit earning simple interest. After one year he had earned 
in interest. What was the interest rate?
A. 4%
B. 10%
C. 5%
D. 8%
Answer: D
Mathematics
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Find the derivative of y with respect to the independent variable.y = (cos ?)
A. -
cos ? sin ?
B. 
(cos ?)
-1
C. -
(cos ?)
-1 sin ?
D. -(cos ?)
-1 sin ?
Mathematics
Solve the problem.If w = 8i + 4j, find 2w.
A. 16i + 4j B. 10i + 4j C. 16i + 8j D. 10i + 6j
Mathematics
Use DeMoivre's Theorem to find the indicated power of the complex number. Write the answer in rectangular form.(cos 30° + i sin 30°)12
A. i B. -i C. 1 D. -1
Mathematics
Round the number to its given place value.In a laboratory course in veterinary biology, fleas gathered from Princess, a volunteered pet dog, averaged 0.166227 inch in length. Round this amount off to the nearest thousandth.
A. 0.167 in. B. 0.166 in. C. 0.165 in. D. 0.1662 in.
Mathematics