Express in terms of i.
A. -8
B. 8i
C. -8i
D. 8
Answer: B
Mathematics
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Write the number in scientific notation.0.0000066117
A. 6.6117 × 10-7 B. 6.6117 × 106 C. 6.6117 × 10-6 D. 6.6117 × 10-5
Mathematics
150 students in a math class take the final exam. The scores on the exam have an approximately normal distribution with mean ? = 65 and standard deviation ? = 10.The third quartile of the scores on the exam is approximately
A. 67 points. B. 80 points. C. 84 points. D. 72 points. E. none of these
Mathematics
Find the length of the arc intercepted by the given central angle ? in a circle of radius r.? = 
, r = 78.2 m
A. 52.1 m B. 117.3 m C. 163.8 m D. 368.5 m
Mathematics
Let f(x) = 8x2 - 5x and g(x) = 7x + 9. Find the composite.g[f(4)]
A. 148 B. 2983 C. 765 D. 37
Mathematics