Solve the problem.A certain radioactive isotope decays at a rate of 0.1% annually. Determine the half-life of this isotope, to the nearest year.
A. 301 yr
B. 7 yr
C. 693 yr
D. 500 yr
Answer: C
Mathematics
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Evaluate the determinant.
A. 121 B. -41 C. -27 D. 41
Mathematics
Simplify.
A. 
B. 
C. 
D. 
Mathematics
Find the expression as the sine or cosine of an angle.
What will be an ideal response?
Mathematics
Solve for the specified variable.F = 
for G
A. G = 
B. G = Fd2
C. G = 
D. G = 
Mathematics