Use the law of Cosines to solve the given triangle. Round your answer to two decimal places.
?
C = 40°, a = 
, b = 
?
A. A ? 41.21°, B ? 98.79°, c ? 0.13
B. A ? 99.76°, B ? 98.76°, c ? 0.13
C. A ? 98.76°, B ? 41.24°, c ? 0.20
D. A ? 41.24°, B ? 98.76°, c ? 0.20
E. A ? 98.79°, B ? 41.21°, c ? 0.20
Answer: A
Mathematics
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Perform the indicated operation.
A. 7
B. -7
C. -17
D. - 
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Find the domain of the composite function f?g. Write the domain in interval notation.f(x) = 6x + 60, g(x) = x + 2
A. (-?, 12) ? (12, ?) B. (-?, -12) ? (-12, ?) C. (-?, -10) ? (-10, -2) (-2, ?) D. (-?, ?)
Mathematics
Solve the problem.The sum of a student's three scores is 214. If the first is 15 points more than the second, and the sum of the first two is 7 more than twice the third, what was the first score?
A. 69 points B. 80 points C. 54 points D. 65 points
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Simplify.-|-12|
A. -12
B. - 
C. 12
D. 24
Mathematics