Find the sum of the geometric series.Express the answer as a fraction.

A.
B.
C.
D.


Answer: C

Mathematics

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Write a formula for the nth term of the arithmetic sequence. Use the formula to find the indicated term of the sequence.a = 78, d = -10;Find a6.

A. an = 88 - 10n, a6 = -42 B. an = 78 - 10n, a6 = -42 C. an = 78 - 10n, a6 = 28 D. an = 88 - 10n, a6 = 28

Mathematics

Factor completely, if possible.x2 + 1.4x + 0.49

A. (x + 0.7)(x - 0.7) B. Prime C. (x + 0.7)2 D. (x - 0.7)2

Mathematics

Simplify.- 

A.
B.
C. - 
D. - 

Mathematics

Solve by factoring.x2 + 13x + 36 = 0

A. {4, 9} B. {-36, -1} C. {-4, -9} D. {1, 36}

Mathematics