Use sigma notation to write the sum.
?

?

A.

B.

C.

D.

E.


Answer: D

Mathematics

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Perform the division and simplify. ? ?

A.
B. ?
C. ?
D. ?
E. ?

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Solve the equation. -  = 0

A. ? B. {-3, 4} C. {8, 4} D. {4}

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Find the indicated root. Give a decimal approximation if necessary. Round to the nearest thousandth.

A. 15 B. 15.460 C. 15.475 D. 15.447

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Solve the problem.A rectangle has a length of x + 2 and a width of x - 2, and has an area of 60 square units. Find the length and width of the rectangle. (A = LW)

A. width = 3 units; length = 20 units B. width = 4 units; length = 15 units C. width = 6 units; length = 10 units D. width = 5 units; length = 12 units

Mathematics