Find the integral.

A.   cos 5x + C
B. - 45 cos 5x + C
C. -  cos 5x + C
D. 9 cos 5x + C


Answer: C

Mathematics

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Suppose a tractor purchased at a price of $60,000 is to be depreciated by the double declining-balance method over a 10-year period. It can be shown that the rate at which the book value will be decreasing is given by ?  ?  dollars/year at year t. Find the amount by which the book value of the tractor will depreciate over the first 4 years of its life. Please round the answer to the nearest cent. ? 

A. $44,258.76 B. $34,481.40 C. $29,465.81 D. $32,210.13 E. $34,360.97

Mathematics

Reduce the fraction.

A.
B.
C.
D.

Mathematics

Find the x- and y-intercepts of the parabola associated with the quadratic equation. If the parabola does not have any x-intercepts, state "no x-intercepts."y = x2 + 12x + 36

A. (6, 0), (0, 36) B. (36, 0), (0, -6) C. (-6, 0), (0, 36) D. (36, 0), (0, 6)

Mathematics

Find fraction notation and simplify.64%

A.
B.  
C.  
D.  

Mathematics