Solve the problem.The pitch P of a musical tone is inversely proportional to its wavelength W. One tone has a pitch of 206 vibrations per second and a wavelength of 13.1 ft. Find the wavelength of another tone that has a pitch of 348 vibrations per second. Round to the nearest tenth.
A. 5472.4 ft
B. 0.000183 ft
C. 0.13 ft
D. 7.8 ft
Answer: D
Mathematics
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Solve the problem. Round to the nearest cent.On October 1, the unpaid balance in an account was $139. No payments were made that month. The finance charge rate was 
per month of the average daily balance. Find the finance charge for the month of October.
A. $1.94 B. $1.71 C. $1.68 D. $1.81
Mathematics
Graph each system of inequalities and shade the portion of the graph represented by the solution set..
A. 
B. 
C. 
D. 
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Find 
.5x + y = yln 5
A. 
B. 
C. 
D. 
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Solve the radical equation.
+ 
= 2k
A. ?
B. 
C. 
D. 
Mathematics