Add or subtract and simplify. + 

A.  
B.  
C.  
D.  

Answer: D

Mathematics

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Solve the problem.Water is slowly rising in a horizontal drainage pipe. The width w of the water as a function of the depth h is w = , where r is the radius of the pipe. Find dw/dh for h = 3.1 in. and r = 6.1 in.

A. 1.13 in./in. B. 2.66 in./in. C. 0.56 in./in. D. 5.31 in./in.

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Mathematics

Sketch the graph of y = -1 - cosx over one period.


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Mathematics

Provide an appropriate response.Explain why  ? . Reduce the fraction correctly.

What will be an ideal response?

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Mathematics

Express as a single logarithm.3 loga (2x + 1) - 2 loga (2x - 1) + 2

A. loga 
B. loga 2(x + 1)
C. loga (2x + 3)
D. loga (2x + 1) + 2

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Mathematics