Write the first four elements of the sequence. sin (n?)
A. 1, 0, -1, 0
B. 0, 0, 0, 0
C. 0, 1, 0, -1
D. 1, 1, 1, 1
Answer: B
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Solve the problem.Suppose that R ={(x, y): 0 ? x ? 2, 0 ? y ? 5},R1 = {(x, y): 0 ? x ? 2, 0 ? y ? 4}, andR2 = {(x, y): 0 ? x ? 2, 4 ? y ? 5}. Suppose, in addition, that
dA = 5, 
dA = 5, and 
dA = 2.Use the properties of integrals to evaluate 
dA.
A. 16 B. 70 C. 30 D. 11
Use the order of operations to evaluate each problem.72 - 4 ? 5
A. 45 B. 225 C. 29 D. 105
Solve the system of equations.x2 + y2 = 40x2 - y2 = 32
A. (6, 2), (2, 6), (-6, -2), (-2, -6) B. (6, -2), (6, 2) C. (6, 2), (-6, 2), (6, -2), (-6, -2) D. (-6, -2), (-2, -6)
Find the term that should be added to the expression to form a perfect square trinomial. Write the resulting perfect square trinomial in factored form.x2 - 18x
A. 81; (x - 9)2 B. 81; (x + 9)2 C. 81; (x - 18)2 D. 0; (x - 9)2