Find the sum or difference. Write the answer in lowest terms.-  + 

A.  
B.
C.  
D.  


Answer: D

Mathematics

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Write the function in the form y = f(u) and u = g(x). Then find dy/dx as a function of x.y = cot(9x - 6)

A. y = cot u; u = 9x - 6;  = - 9 cot(9x - 6) csc(9x - 6)
B. y = 9u - 6; u = cot x;  = - 9 cot x csc2 x
C. y = cot u; u = 9x - 6;  = - csc2(9x - 6)
D. y = cot u; u = 9x - 6;  = - 9 csc2(9x - 6)

Mathematics

Apply Green's Theorem to evaluate the integral.(7y dx + 5y dy)C: The boundary of 0 ? x ? ?, 0 ? y ? sin x

A. 0 B. 4 C. -2 D. -4

Mathematics

Solve the problem.The area of the rectangle is represented by y2 + 2y - 35. What is the length?

A. y + 5 B. y - 7 C. y + 7 D. y - 5

Mathematics

Solve by substitution and check.x + y = 9 y = 2x + 3

A. (7, 2) B. (2, 7) C. (3, 6) D. (1, 9)

Mathematics