Solve the problem.The half-life of a certain radioactive substance is 22 years. Suppose that at time t = 0 , there are 21 g of the substance. Then after t years, the number of grams of the substance remaining will be 
How many grams of the substance will remain after 242 years? Round to the nearest hundredth when necessary.
A. 0.23 g
B. 0.06 g
C. 0.46 g
D. 0.12 g
Answer: C
Mathematics
You might also like to view...
Use a calculator to evaluate the expression. (If necessary, round your answer to three decimal places.)
?
?
A. -288 B. -48 C. 288 D. 144 E. 24
Mathematics
Determine the symmetries of the curve.r2 = 5 cos 5?
A. x-axis, y-axis, origin B. x-axis only C. Origin only D. y-axis only
Mathematics
R1 = 2.2 Kê, R2 = 3.3 Kê, RL = 1.2 Kê, and E = 20 V. Find the value of VL.
a. 1.20 V
b. 3.29 V
c. 7.06 V
d. 12.39 V
e. 16.67 V
Mathematics
Round to the indicated place value.Round to the nearest ten: 19,188.40
A. 19,200 B. 19,100 C. 19,190
Mathematics