Solve the problem.A sail on a sailboat is supported by a mast and a boom. The length and direction of the mast and boom can be described by the vectors m = i - 4j + 5k and b = -2i + 3j + k, respectively, where the components are in meters. Find the angle (to the nearest tenth of a degree) between the mast and boom.
Fill in the blank(s) with the appropriate word(s).
?? 111.8°
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Multiply.(3p3r2)(-5p2q2)(-q3r3)
A. -15p6q5r6 B. 15p5q5r5 C. 15p5q5r7 D. 15p6q5r6
Solve the problem.A survey is taken to determine if Social Security should be privatized. Eight hundred players in a national bridge tournament are randomly surveyed. The survey found strong opposition to the concept of privatization. This conclusion might be invalid because
A. the size of the sample is too small. B. of the placebo effect. C. the sample is not representative of the population. D. there was no control group. E. none of these
Multiply.(16.54)(0.0084)
A. 0.148936 B. 0.128936 C. 0.138936 D. 0.238936
Solve the problem.A car rental company charges $23 per day and $0.39 per mile to rent a car. What is the total bill if a car is rented for 3 days and is driven 133 miles?
A. $17.13 B. $70.17 C. $3110.87 D. $120.87