Use the given matrices to compute the given expression.Let A =
and B =
. Find 2A + B.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Solve the problem.Find k such that the line kx + 15y = 4 is perpendicular to the line through (5, -8) and (-2, -4).
A. k = -26.25 B. k = -33.75 C. k = 26.25 D. k = 33.75
Mathematics
Find the derivative.f(x) = cos e3x
A. e3x cos e3x B. 3e3x sin e3x C. -3 sin e3x D. -3e3xsin e3x
Mathematics
Find the exact value of the expression.cos 
cos 
- sin 
sin 
A. 0
B. 1
C. -1
D. 
Mathematics
Solve the problem.The total budget for a certain government program was 
. Round this amount to the nearest million.
A. $13,450,000,000 B. $13,449,930,000 C. $13,449,930,260 D. $13,449,930,300
Mathematics