Tritium, a radioactive isotope of hydrogen, has a half-life of 12.4 years. Of an initial sample of 33 grams, how much will remain after 69 years?
?
A. 0 grams
B. 29.1351 grams
C. 10.9074 grams
D. 8.2500 grams
E. 0.6973 grams
Answer: E
You might also like to view...
Solve.The current I in an electrical conductor varies inversely as the resistance R of the conductor. The current is 7 amperes when the resistance is 510 ohms. What is the current when the resistance is 748 ohms?
A. 4.8 amperes B. 0.1 amperes C. 0.21 amperes D. 10.3 amperes
Find the absolute value.
?
Fill in the blank(s) with the appropriate word(s).
Find the equation for the line described.the line passing through the point (2, 3) and having slope -4
Fill in the blank(s) with the appropriate word(s).
Solve the system of equations. If the system has infinitely many solutions, let the last variable be the arbitrary variable.x + y + z = 7x - y + 2z = 7
A. 
B. 
C. 
D. 