Give the degree measure of ?.? = cos-1 
A. 330°
B. 45°
C. 315°
D. 30°
Answer: D
Mathematics
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Solve the problem.Find the missing length in the following right triangle. If necessary, round to the nearest tenth. 
A. 40 mi B. 20 mi C. 6.3 mi D. 10 mi
Mathematics
Find the domain of the rational function.f(x) = 
A. domain of f: (-?, -9) ? (-9, 9) ? (9, ?) B. domain of f: (-?, 0) ? (0, ?) C. domain of f: (-?, -9) ? (-9, 2) ? (2, ?) D. domain of f: (-?, -2) ? (-2, 9) ? (9, ?)
Mathematics
Tell whether or not the relation is a function.{(-3,-4), (-2,9), (2,-8), (2,9)}
A. Yes B. No
Mathematics
Find the present value. Round to the nearest cent.
A. $11,507.51 B. $55,926.79 C. $4692.49 D. $5161.82
Mathematics