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 either was given the allergy drug or did not improve? Round your answer to the nearest thousandth when necessary.
A. 0.11
B. 0.748
C. 0.858
D. 0.458
Answer: B
Mathematics
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e-x2 - y2
A. e18 B. 1 C. e-18 D. 0
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Find the vertex of the parabola.f(x) = 6x2 - 5
A. (-5, -5) B. (0, 0) C. (-5, 0) D. (0, -5)
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Write an equation for the line described. Give your answer in slope-intercept form.through (-4, 5), m = 0
A. y = 5 B. x = -4 C. x = 5 D. y = -4
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Find the missing factor.21x2 + 13x - 20 = (7x - 5)( )
A. 4x + 3 B. 3x - 4 C. 4x - 3 D. 3x + 4
Mathematics