In how many ways can 8 candy bars be selected from 13 different candy bars?
?

A. 1,030
B. 2,574
C. 3,861
D. 1,287
E. 5,148

Answer: D

Mathematics

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Write the converse, inverse, or contrapositive as requested, and determine whether it is equivalent to the original statement.If you have 30 years of teaching experience, then you get your full retirement. (Contrapositive)

A. If you get your full retirement, then you have 30 years of teaching experience. Equivalent B. If you do not get your full retirement, then you do not have 30 years of teaching experience. Equivalent C. If you get your full retirement, then you have 30 years of teaching experience. Not equivalent D. If you do not get your full retirement, then you do not have 30 years of teaching experience. Not equivalent

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Mathematics

Find the nth term of the geometric sequence.4, 2, 1, , . . .

A. a_n = (4)^n-1
B. a_n = 4 ^n-1
C. a_n = 4 ? 2^n-1
D. a_n = 4 ^n-1

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Mathematics

Factor completely.15x2y2 + 31xy2 + 10y2

A. (5x + 2y)(3x + 5y) B. y2(x + 2)(15x + 5) C. y2(5x + 2)(3x + 5) D. (3x + 2y)(5x + 5y)

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Mathematics

Solve the problem.An appliance dealer has three stores in the town of Washingwell. During a given week, they have a beginning inventory of Washing Dish Machines WashersB = a sales matrix of Washing Dish Machines WashersS = and an ending inventory of Washing Dish Machines WashersE =