Solve the equation. Check your solution.(x + 6) = (x + 8)

A. {-1}
B. {1}
C. {3}
D. {-12}


Answer: A

Mathematics

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Evaluate the line integral along the curve C.ds , C is the path given by:C1: r(t) = (9 cos t)i + (9 sin t)j from (9, 0, 0) to (0, 9, 0)C2: r(t) = (9 sin t)j + (9 cos t)k from (0, 9, 0) to (0, 0, 9)C3: r(t) = (9 sin t)i + (9 cos t)k from (0, 0, 9) to (9, 0, 0)

A.
B. ?
C. - ?
D. 0

Mathematics

Evaluate the expression.

A. 336 B. 6720 C. 20,160 D. 56

Mathematics

Factor the polynomial completely.81x2z + 126xyz + 49y2z

A. z(9x + 7y)2 B. z(9x + 7y)(9x - 7y) C. z(9x - 7y)2 D. (9xz + 7yz)2

Mathematics

Solve the problem.A velocity ? 0 indicates that the object is traveling upward and a velocity ? 0 indicates that the object is traveling downward. An object is projected upward and v(t) = -9t + 42.3, 0 ? t ? 12. Determine the interval when the object is traveling downward.

A. [4.7, 12] B. [0, 4.7] C. [4.7, 9] D. [3.7, 7.7]

Mathematics