Solve the problem.If f(?) = cot ? and f(a) = -6, find the exact value of f(-a).
A. -6
B. - 
C. 
D. 6
Answer: D
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Perform the indicated operations. [(1.7x3 + 7.6x2 + 4.3) + (6.5x - 2.8)] - (3.5x2 -x - 9.9)
A. 1.7x3 + 4.1x2 + 7.5x + 11.4 B. 13.3x6 + 11.4 C. 1.7x3 + 4.1x2 + 6.5x + 11.4 D. 1.7x3 + 11.1x2 + 5.5x - 8.4
Find the standard deviation s for the given data. Round your answer to one more decimal place than the original data.The normal monthly precipitation (in inches) for August is listed for 12 different U.S. cities.3.51.62.43.74.13.91.03.64.23.43.72.2Compute the standard deviation.
A. 1.00 B. 12.03 C. 1.05 D. 1.09
Solve the problem. Round to two decimal places if needed.Find the area of the sector of a circle of radius 11.5 feet formed by a central angle of 19.141°.
A. 44.18 square feet B. 22.09 square feet C. 25.09 square feet D. 47.18 square feet
Provide an appropriate response.List the first four multiples of 4 and 9.
A. 20, 24, 28, 32; 45, 54, 63, 72
B. 4, 8, 12, 16; 9, 18, 27, 36
C. 4, 2, 
, 1; 9, 
, 3, 
D. 4, 16, 64, 256; 9, 81, 729, 6561