Perform the indicated operation.Let B = 
. Find -3B.
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Find cos(A - B).cos A = - 
and cos B = 
, where 
and 
.
A. - 
B. 
C. 
D. - 
Mathematics
Graph.y = x4 - 3
A. 
B. 
C. 
D. 
Mathematics
Encode or decode the given message, as requested, numbering the letters of the alphabet 1 through 26 in their usual order.Use the coding matrix A = 
to encode the message CARE.
A. 
B. 
C. 
D. 
Mathematics
Solve the equation.7x = 8(x + 6) - 7
A. -55 B. 55 C. -41 D. 41
Mathematics