Perform the operation and write the result in the standard form.(6 - 7i)(7 - 4i)

A. 28i2 - 73i + 42
B. 14 - 73i
C. 14 + 73i
D. 70 - 25i


Answer: B

Mathematics

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Use logarithmic differentiation to find the derivative of y with respect to the independent variable.y = (x + 8) sin x

A.  sin x ln (x + 8)
B. (x + 8) sin x
C.  (x + 8) sin x
D. cos x ln (x + 8+  

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Find the surface area of the surface S.S is the portion of the surface 3x + 4z = 2 that lies above the rectangle 3 ? x ? 10 and  in the 

A.
B. 70
C.
D. 39

Mathematics

Write out the terms of the series.

A. -7 - 9 - 9 - 7 B. -7 - 9 - 9 - 7 + ... C. 1 - 7 - 9 - 9 D. -7 + 9 - 9 + 7

Mathematics

Conditions in a company's general, industry and competitor environments that "enable the firm to use its core competencies to achieve its vision" are known as

A. strengths B. threats C. opportunities D. weaknesses

Mathematics