Calculate.-7 - 9

A. -16
B. 16
C. -2
D. 2

Answer: A

Mathematics

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Use integration by parts to establish a reduction formula for the integral., n ? 1

A.  = cotn-1 x - 
B.  =  cotn-2 x - 
C.  = - cotn-1 x +  
D.  =  cotn-1 x + 

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Mathematics

Construct a truth table for the statement.~((w ? s) ? q)

A.

TTTF
T T F F
T F T F
T F F T
F T T F
F T F T
F F T F
F F F T
B.
TTTT
T T F F
T F T T
T F F F
F T T T
F T F F
F F T T
F F F F

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Mathematics

Use the laws of exponents to simplify each expression using positive exponents only. Assume all variables represent nonzero real numbers.4-3 ? 4

A. 64
B.
C.
D. 16

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Mathematics

Perform the matrix operation.Given A =  and B =  , find AB.

A.

B.  

C.

D.
 

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Mathematics