Evaluate the determinant.
A. 17
B. 379
C. -79
D. -17
Answer: A
Mathematics
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Find the indicated probability.The following table show the results of a clinical trial for an allergy drug. 
What is the probability that a randomly selected person received no treatment or improved? Round your answer to the nearest thousandth when necessary.
A. 0.89 B. 0.082 C. 0.742 D. 0.66
Mathematics
The following figure has perimeter, circumference, or area as indicated. Find the value of x. Use 3.14 as an approximation for ?.C = 56.52
A. 9 B. 12 C. 15 D. 6
Mathematics
Simplify the complex fraction.
A. 
B. 
C. 
D. 
Mathematics
Subtract.48 - 48
A. 40 B. 16 C. 0 D. 1
Mathematics