Evaluate the expression.-6 + 7 ? 9
A. -21
B. -57
C. 69
D. 57
Answer: D
Mathematics
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Provide an appropriate response.Let sk denote the kth partial sum of the alternating harmonic series. Compute 
, 
, and 
. Which of these is closest to the exact sum (ln 2) of the alternating harmonic series?
A. 
B. 
C. 
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Find the derivative.y = 
A. 
B. 
C. 
D. 
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Solve the problem.In order for a chemical reaction to take place, the Fahrenheit temperature of the reagents must be at least 
Find the Celsius temperatures at which the reaction may occur. 
A. C ? 344.01° B. C ? 78.52° C. C < 344.01° D. C ? 78.52°
Mathematics
Provide an appropriate response.True or false: x4/7 = 
A. False B. True
Mathematics