Simplify the complex number to its rectangular form.2 - j8

A. 27
B. 28
C. 26
D. -26

Answer: C

Mathematics

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Find the length of the indicated portion of the curve.r(t) = (etcos t)i + (etsin t)j + 7etk, -ln 2 ? t ? 0

A.
B.
C.
D.

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Mathematics

Factor completely.252x4 - 175

A. 7(6x2 - 5)(6x2 + 5) B. 7(6x2 - 5)2 C. 7(36x4 - 25) D. (42x2 - 35)(6x2 + 5)

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Mathematics

Write the expression as the sum or difference of single logarithms. log9

A. log₉x + log₉y - 2log₉z
B. log₉x + log₉y - log₉z
C. log₉x ? log₉y ÷ 2log₉z
D. 5log₉x + 2log₉y - 2log₉z

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Mathematics

An object is thrown from the origin of a coordinate system with the x-axis along the ground and the y-axis vertical. Its path, or trajectory, is given by the equation . Find the object's maximum height. ?

A. 1,296 units B. 3,888 units C. 36 units D. 18 units E. 9 units

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Mathematics