Find the opposite of the expression.-5x2 + 2x + 16
A. 5x2 - 2x - 16
B. 5x2 - 2x + 16
C. -5x2 + 2x + 16
D. -5x2 - 2x - 16
Answer: A
Mathematics
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Find the derivative of y.y = ln(sech (9x + 8))
A. -9 tanh (9x + 8)
B. 
C. -tanh (9x + 8)
D. tanh (9x + 8)
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Solve the problems.On a map of the Fox River, 1 centimeter represents 6 kilometers. If a trail by the river is actually 20.40 kilometers long, what is the length of the river on the map? Round to nearest tenth.
A. 5.4 centimeters B. 9.4 centimeters C. 3.4 centimeters D. 14.4 centimeters
Mathematics
Find the exact value of the expression.sec
A. 
B. - 
C. - 
D. - 
Mathematics