Each matrix is nonsingular. Find the inverse of the matrix. Be sure to check your answer. 
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Given f(x) and g(x), find the composition.f(x) = 1 + 4x; g(x) = 
Find (f ? g)(-4).
A. 
B. 0
C. - 
D. Undefined
Mathematics
Evaluate the expression using the given values.vt + 
at2; v = 31, t = 1.2, a = -12.5
A. 28.2 B. 28 C. 29.4 D. 28.4
Mathematics
Classify the angle as acute, right, obtuse, or straight.
A. Obtuse B. Straight C. Acute D. Right
Mathematics
Answer the question.Fred has taken two exams so far in his Chemistry course. His scores are 98 and 91. What is the average of these scores?
A. 94.2 B. 91.8 C. 94.5 D. 95.7
Mathematics