Each matrix is nonsingular. Find the inverse of the matrix. Be sure to check your answer.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Use the inverse trig functions to express the angle in terms of the indicated unknown side. 
Express angle A in terms of c. Use one of the inverse trig functions tan-1, sin-1, or cos-1.
A. A = cos-1 
B. A = sin-1 
C. A = sin-1 
D. A = cos-1 
Mathematics
Solve the problem.Find the total area of the ends of the garage.
A. 264 ft2 B. 216 ft2 C. 108 ft2 D. 200 ft2
Mathematics
Use the power property to rewrite the expression.log3 y-4
A. 3log4 y-4 B. -3log4 y C. -4log3 y D. 4log3 y
Mathematics
In a certain college, 33% of the physics majors belong to ethnic minorities. Find the probability of the event from a random sample of 10 students who are physics majors.Seven or more belong to an ethnic minority.
A. 0.0028 B. 0.0154 C. 0.0185 D. 0.0032
Mathematics