Write the expression in the standard form a + bi.(7 + 8i) - (-6 + i)

A. -13 - 7i
B. 13 - 7i
C. 1 + 9i
D. 13 + 7i


Answer: D

Mathematics

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Replace the question mark with the appropriate symbol < or >.22 ? 0

A. < B. >

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Identify the equation as either an identity or not.sin ? sec ? = cos ? csc ?

A. Identity B. Not an identity

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Find all zeros of the function

a. x = 2, -4, 2 + 4i - 2 + 4i b. x = 2, -4, -2 - 4i, 2 - 4i c. x = 2, -4, -2 - 4i, 2 + 4i d. x = -2, 4, 2 + 4i, -2 -4i e. x = -2, 4, 2 + 4i, 2 + 4i

Mathematics

Provide an appropriate response.Does a linear program with at least three constraints always have a closed feasible region?

A. Yes B. No

Mathematics