Solve the problem.A certain radioactive isotope has a half-life of 252 years. Determine the annual decay rate, k.
A. 0.135%
B. 0.195%
C. 0.265%
D. 0.275%
Answer: D
Mathematics
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Use a combination of rules for exponents to simplify. Write answers with only positive exponents. Assume that all variables represent nonzero real numbers.
-4
A. 
B. 
C. 
D. 
Mathematics
Subtract.-15 + 1 - 9 - (-20) + 3
A. 0 B. -40 C. -30 D. -22
Mathematics
Sketch the line with the given slope that passes through the indicated point.Slope = 1; line passes through the point (-4, -6)
A. 
B. 
C. 
D. 
Mathematics
Evaluate:. 
a. 177,100 b. 303,600 c. 480,700 d. 12,650
Mathematics