Express the number in terms of i.

A. - i
B.  i
C. 7i
D. -7i


Answer: C

Mathematics

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Evaluate. If necessary, find common denominators and simplify completely.5 + 8 - 2

A. 10
B. 10
C. 10
D. 10

Mathematics

List the intercepts of the graph. 

A. (3, 0), (0, -3), (0, 1), (0, 5) B. (-3, 0), (1, 0) (5, 0), (0, 3) C. (3, 0), (0, 3), (0, 1), (0, -5) D. (3, 0), (1, 0), (-5, 0), (0, 3)

Mathematics

Convert the units using unit fractions.360 min =  hr

A. 6  B. 144  C. 3 D. 15 

Mathematics

An equation with a restriction on x is given. This is the equation of the terminal side of an angle ? in standard position. Sketch the smallest positive such angle ?, and use your sketch to find the values of the indicated trigonometric functions. Rationalize denominators when applicable.-x + y = 0, x ? 0Find sin ? and sec ?.

A. sin ? = -1; sec ? = 
B. sin ? = 1; sec ? = - 
C. sin ? = - ; sec ? = -2
D. sin ? = -2; sec ? = - 

Mathematics