Rewrite the series using summation notation. Use 1 as the lower limit of summation.5 +  +  + . . . + 

A.
B.
C.
D.


Answer: A

Mathematics

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Write the complex number in polar form. Express the argument in degrees.4i

A. 4(cos 0° + i sin 0°) B. 4(cos 180° + i sin 180°) C. 4(cos 270° + i sin 270°) D. 4(cos 90° + i sin 90°)

Mathematics

Tell where the function is decreasing. ? ? Please enter your answer in interval notation.

What will be an ideal response?

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Find the slope and the y-intercept of the given line.y = - x + 5

A. - ; (0, -5)
B. - ; (0, 5)
C. ; (0, 5)
D. ; (0, -5)

Mathematics

Translate to an equation and solve.  45% of what is 72?

A. 0.63 B. 1600 C. 160 D. 63

Mathematics