Evaluate the expression without the use of a calculator, and then verify your answer using a calculator.ln l

A. 1
B. -1
C. 0
D. e


Answer: C

Mathematics

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A. ln 
B. ln 
C. ln 
D. ln 

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Find the length of the curve.The curve r = a cos2 , 0 ? ? ? ?, a > 0

A. 2?a
B.
C.
D. 2a

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Add or subtract. Simplify your answer to lowest terms. +  - 

A.  
B.
C.  
D.  

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Find the logarithm. Give an approximation to four decimal places.log(2.21 × 105)

A. 0.3444 B. 5.0000 C. 5.3444 D. -4.6556

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