Find dy.y = 

A. 3 dx
B.  dx
C.  dx
D.  dx


Answer: C

Mathematics

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Solve.The total pages of a hardbound book are 3.5 cm thick. The front and back covers are each  thick. How high would a stack of 11 of these books be?

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Express the sum or difference as a product of sines and/or cosines.cos  + cos 

A. 2 cos(4?)
B. 2 cos(4?) cos 
C. 2 sin(4?) sin ?
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Mathematics