Solve the problem.Strontium 90 decays at a constant rate of 2.44% per year. Therefore, the equation for the amount P of strontium 90 after t years is P = P0 e-0.0244t. How long will it take for 15 grams of strontium to decay to 5 grams? Round answer to 2 decimal places.
A. 450.25 years
B. 40.50 years
C. 45.03 years.
D. 4.50 years
Answer: C
Mathematics
You might also like to view...
Solve the problem.A lens can be described as the volume generated by rotating the first quadrant area under the curve 
about the y-axis (measurements in cm). Find its centroid.
A. 0.833 cm above the center of the base B. 1.25 cm above the center of the base C. 1.67 cm above the center of the base D. 3.33 cm above the center of the base
Mathematics
If a square with side length 1 unit and a circle with circumference 1 unit are drawn on top of each other, will the square be inside or outside the circle? Explain.
What will be an ideal response?
Mathematics
Perform the indicated operations. Simplify if possible.
+ 
- 
A. 
B. 
C. 
D. 
Mathematics
Find the sum.-14 + [11 + (-21)]
A. 46 B. 4 C. -24 D. 18
Mathematics