Find the area of a sector with the given central angle ? in a circle of radius r.? = 90°, r = 6 cm
A. 18? sq cm
B. 1.5? sq cm
C. 3? sq cm
D. 9? sq cm
Answer: D
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Refer to a normal distribution described by the following figure. The mean is ? and the standard deviation is ?.
A data value of -70 corresponds to a standardized value of
A. -0.5. B. -2.22. C. -0.25. D. -1.5. E. none of these
Express as a sum of logarithms.log2(4 ? 8)
A. log24 + log28 B. log42 + log82 C. log22 + log23 D. log24 + log28 + log22
Round to the indicated place.The average price of all new cars sold in the U.S. last year was $19,987.60. Round the price to the nearest hundred dollars.
A. $20,100 B. $19,990 C. $20,000 D. $19,900
Determine whether the system of linear equations has one and only one solution, infinitely many solutions, or no solution. Find all solutions whenever they exist.
