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