Solve the problem.A certain radioactive isotope decays at a rate of 0.25% annually. Determine the half-life of this isotope, to the nearest year.
A. 200 years
B. 277 years
C. 3 years
D. 120 years
Answer: B
Mathematics
You might also like to view...
Find the sum of the series.
A. 
B. 
C. 
D. 
Mathematics
Find all the second order partial derivatives of the given function.f(x, y) = x2 + y - ex+y
A. 
= 2 + ex+y; 
= ex+y; 
= 
= ex+y
B. 
= 2 - y2ex+y; 
= -x2ex+y; 
= 
= - y2ex+y
C. 
= 1 - ex+y; 
= - ex+y; 
= 
= -ex+y
D. 
= 2 - ex+y; 
= - ex+y; 
= 
= -ex+y
Mathematics
Use =, <, or > to write a true statement.0 -6.8
A. > B. = C. <
Mathematics
First rewrite the quadratic function in standard form by completing the square, then find any x-intercepts and any y-intercepts.f(x) = -12x2 - 2x - 4
A. x-intercepts: 
and 
; y-intercept: -4
B. x-intercepts: - 
and - 
; y-intercept: 4
C. No x-intercepts; y-intercept: -4
D. No x-intercepts; No y-intercepts
Mathematics