Solve the problem.A certain radioactive isotope has a half-life of 396 years. Determine the annual decay rate, k.

A. 0.265%
B. 0.195%
C. 0.135%
D. 0.175%

Answer: D

Mathematics

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Factor the difference of two squares completely.16x4 - 169y6

A. (4x2 - 13y3)2 B. (4x2 + 13y3)(4x2 - 13y3) C. (4x2 + 13y3)2 D. Prime

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Multiply and simplify if possible.( + )( - )

A. 3 - 2
B. 10
C. 3 - 2
D. -4

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Evaluate the expression.6P4

A. 2 B. 30 C. 24 D. 360

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Find the angle ? between the given vectors to the nearest tenth of a degree. ? ?

A.
B. ?
C. ?
D. ?
E. ?

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