Find the product.
? 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Given matrix A, find the indicated cofactor.Find A21.A = 
A. -11 B. -14 C. 11 D. 14
Mathematics
Find the exact value of the indicated trigonometric function of ?.sec ? = 
, ? in quadrant IVFind tan ?.
A. - 
B. - 
C. - 
D. - 
Mathematics
Solve the equation.
= 1 + 
A. ? B. {6, 10} C. {-2, 4} D. {-12}
Mathematics
Solve the problem.Suppose the function y = 4.3t - 4.1 determines the actual time that has elapsed, in minutes, for t minutes of a person's estimate of the elapsed time. Find the actual time that has elapsed for an estimate of 
minutes.
A. 253.9 min B. 262.1 min C. 77.63 min D. 42.37 min
Mathematics