Find the equation of the given line.
A. y = -2
B. y = 2
C. x = 2
D. x = -2
Answer: C
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Find the mean for the given sample data. Unless otherwise specified, round your answer to one more decimal place than that used for the observations.The normal monthly precipitation (in inches) for August is listed for 20 different U.S. cities. Find the mean monthly precipitation.
A. 2.80 in. B. 2.94 in. C. 3.09 in. D. 3.27 in.
Find the mode(s).Following is a list of the number of blood samples taken each day at a clinic. Find the mode(s).105 samples109 samples19 samples103 samples102 samples108 samples20 samples101 samples104 samples116 samples
A. 9 samples B. no mode C. 8.1 samples D. 8 samples
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An isotope of thorium, 227 Th, has a half-life of 18.4 days. How long will it take 78% of the sample to decompose? Round your answer to two decimal places. ?
A. 40.19 days B. 42.08 days C. 41.50 days D. 40.87 days E. 38.05 days