Solve.The pitch P of a musical tone varies inversely as its wavelength W. One tone has a pitch of 240 vibrations per second and a wavelength of 14 ft. Find the wavelength of another tone that has a pitch of 449 vibrations per second. Round your answer as appropriate.
A. 7697.1 ft
B. 7.5 ft
C. 0.00013 ft
D. 0.13 ft
Answer: B
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Simplify. Write your answer in the form a + bi, where a and b are real numbers.(-6 - 6i) - (5 - i)
A. -11 - 5i B. -11 - 6i C. 11 + 5i D. -11 + 5i
Determine whether the events are independent.In a city, 18% of the people drive Cadillacs and 28% of business executives drive Cadillacs. Are the events "person drives a Cadillac" and "person is an executive" independent?
A. Yes B. No
State whether the graph is or is not that of a function.
A. Function B. Not a function
Use a graphing utility to find the equation of the line of best fit. Round to two decimal places, if necessary.Two different tests are designed to measure employee productivity and dexterity. Several employees are randomly selected and tested with these results.
A. y = 5.05 + 1.91x B. y = 2.36 + 2.03x C. y = 75.3 - 0.329x D. y = 10.7 + 1.53x