Solve the system using the inverse of the coefficient matrix of the equivalent matrix equation.-5x + 3y = 8-2x + 4y = 20
A. (6, 2)
B. (-6, -2)
C. (-2, -6)
D. (2, 6)
Answer: D
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Identify a method whereby a random sample can be selected from the population.A shipment of 2000 radios has arrived at electronic City's warehouse. The warehouse foreman wants to determine the rate of defects. He will randomly sample 20 radios and check for defects. The serial numbers of the radios range from 2010 to 4010.
A. Open a carton and check the first 20 radios. B. Use a table of random numbers to generate 20 random numbers between 2010 and 4010 and use these numbers to identify the radios to be included in the sample. C. Choose the 20 radios that look the most damaged.
In order to build a competitive advantage, a firm must
A. integrate its resources to form capabilities B. develop competencies that are distinctive and rare C. create value for its customers D. all of these are required for a competitive advantage
Use a proportion to solve the problem.In the rectangles below, the ratio of length to width is the same. Find the length of the larger rectangle.
A. 112 ft B. 98 ft C. 91 ft D. 105 ft
State the solution set of the inequality in interval notation and sketch its graph.
< 2
A. (-?, 5) or (2, ?)
B. (-?, -2) or (5, ?)
C. (-2, 5)
D. ?