Write the partial fraction decomposition of the rational expression.

A.  + 
B.  + 
C.  + 
D.  + 

Answer: A

Mathematics

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Use logarithmic differentiation to find the derivative of y with respect to the independent variable.y = (7x + 3)x

A. ln (7x + 3) + 
B. (7x + 3)x
C. (7x + 3)x
D. x ln (7x + 3)

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Mathematics

Evaluate the integral. dt

A. + C
B. -7(cot-1 t)8+ C
C.  + C
D. 7(cot-1 t)6+ C

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Mathematics

Use the figure below to answer the question. m?COD= 80°, AB = 20°, PB= 6 ft, PA= 8 ft and AC = 5 ft.



Find m?DBC.
(a) 20°
(b) 40°
(c) 30°
(d) 80°

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Mathematics

Solve. Remember to insert units when writing your answer.Five milligrams of preservatives are added to a 0.5-kg box of dried fruit. How many milligrams of preservatives are in 8 cartons of dried fruit if each carton contains 18 boxes?

A. 144 mg B. 720 mg C. 72 mg D. 360 mg

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Mathematics