Simplify the fraction.

A.
B.
C.
D.


Answer: C

Mathematics

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Find the sum Sn of the first n terms of the geometric sequence. 3, -9, 27, -81, 243, . . . ; n = 10

A. -44,279 B. -44,286 C. -44,292 D. -44,288

Mathematics

Solve.The three angles in a triangle always add up to 180°. If one angle in a triangle is 72° and the second is 5 times the third, what are the three angles?

A. 72°, 89°, 19° B. 72°, 88°, 20° C. 72°, 90°, 18° D. 72°, 91°, 17°

Mathematics

Simplify the expression.-5b + 8b

A. 3b2 B. 3b C. -13b D. -3b

Mathematics

Solve the problem.Marty's Tee Shirt & Jacket Company is to produce a new line of jackets with a embroidery of a Great Pyrenees dog on the front. There are fixed costs of $640 to set up for production, and variable costs of $43 per jacket. Write an equation that can be used to determine the total cost, C(x), encountered by Marty's Company in producing x jackets, and use the equation to find the total cost of producing 145 jackets.

A. $6875 B. $6855 C. $6887 D. $6867

Mathematics