Write the expression with only positive exponents and evaluate if possible. Assume all variables represent nonzero real numbers.(-3)-1

A. -3
B. 3 
C.  
D. -  

Answer: D

Mathematics

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A. - m4n3
B. m4n3
C. - m2n
D. - m3n2

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Add.

A. 1126 B. 1025 C. 8324 D. 1114

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Use the given trigonometric function value of ? to find the requested trigonometric function value of the acute angle ?. Rationalize the denominators where necessary.cos ? =    Find sec ?.

A.
B.
C.
D.

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