Tritium, a radioactive isotope of hydrogen, has a half-life of 12.4 years. Of an initial sample of 69 grams, how much will remain after 75 years?
A) 0.0000 grams
B) 61.5289 grams
C) 1.5848 grams
D) 17.2500 grams
E) 1.0426 grams
E) 1.0426 grams
Mathematics
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Find the balance for the check stub.
A. $2322.07 B. $1812.39 C. $1302.71 D. $509.68
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Use a scientific calculator to approximate the common logarithm. Round to four decimal places.log 0.0685
A. -1.1580 B. -2.6809 C. -1.1707 D. -1.1643
Mathematics
Find the value of the exponential expression.(0.004)2
A. 0.0016 B. 0.000016 C. 0.008 D. 0.002
Mathematics
Solve.(x + 8)(x - 7) = -14
A. 6, 7 B. -7, 6 C. 8, -7 D. -8, 7
Mathematics