Plutonium-239 is used as a fuel for some nuclear reactors and also as the fissionable material in atomic bombs. It has a half-life of 24,400 years. How long will it take 12 grams of plutonium-239 to decay to 2 grams?
?
Round your answer to the nearest hundreds.
?
A. 31,600 years
B. 15,800 years
C. 126,200 years
D. 63,100 years
E. 63,200 years
Answer: D
Mathematics
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Provide an appropriate response.If three distinct counting numbers have a sum of 9 and a product of 15, what is their median?
Fill in the blank(s) with the appropriate word(s).
Mathematics
Find the least common multiple (LCM) of the pair of numbers.2 and 4
A. 2 B. 4 C. 16 D. 8
Mathematics
Use the change-of-base formula to find the logarithm. Round your answer to four decimal places. log1/25
A. 1.0000 B. -0.4307 C. 0.3979 D. -2.3219
Mathematics
Perform the indicated operations and simplify the expression.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics