Use the product rule to simplify the expression. Assume that the variables can be any real number.

A. 2k5
B. 2k18
C. -2k5
D. 8k5


Answer: A

Mathematics

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Find the required part of the geometric sequence.Find a formula for the nth term of a geometric sequence with third term -  and sixth term - .

A. an = - 1 + 
B. an = - 1
C. an =  + (n - 1)
D. an =  + (n - 1)

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Choose the most reasonable metric length unit. Choose from km, m, cm, and mm.The length of the nail is 25 .

A. m B. cm C. km D. mm

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Find the exact value of the expression.

A. - 
B. -2
C. - 
D. -

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Solve the problem.At the first tri-city meeting, there were 8 people from town A, 7 people from town B, and 5 people from town C. If the council consists of 5 people, find the probability of 3 from town A and 2 from town B.

A. 0.076 B. 0.072 C. 0.023 D. 0.036

Mathematics