Solve the problem.Find the half-life of the radioactive element radium, assuming that its decay constant is 
with time measured in years.
A. 1600 years
B. 2308 years
C. 800 years
D. 1400 years
Answer: A
Mathematics
You might also like to view...
Solve.Two plumbers make house calls. One charges $90 for a visit plus $40 per hour of work. The other charges $70 per visit plus $50 per hour of work. For how many hours of work do the two plumbers charge the same?
A. 2 hr B. 2.5 hr C. 1.5 hr D. 1 hr
Mathematics
Use the power rules to simplify the expression. Use positive exponents to write the answer.
-3
A. 
B. 
C. - 
D. 
Mathematics
Find the area of an equilateral triangle with perimeter 27 meters. Round the answer to two decimal places.
What will be an ideal response?
Mathematics
Find the product.
What will be an ideal response?
Mathematics