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motikmotik
3 years ago
7

Find the next two terms of the sequence: 80, ?40, 20, ?10, ______, ______. A) 20, 40 B) 1 2 , 1 4 C) 5, ? 5 2 Eliminate D) ?30,

?40
Mathematics
1 answer:
SSSSS [86.1K]3 years ago
8 0

Answer:

5, 5/2

Step-by-step explanation:

80 becomes 40 if multiplied by 1/2; 40 becomes 20 if mult. by 1/2; and so on.

Thus, the common ratio of this geometric sequence is 1/2.

1/2 times 10 is 5;

1/2 times 5 is 5/2.

Looks like this is Answer C.  Please note:  your "5, 5 2" is not a correct representation of "5, 5/2."  Please use " / " to indicate division.

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<h3>Step-by-step explanation:</h3>

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Using scientific notation, it is found that:

67 ns = 6.7 \times 10^{-8}s

<h3>What is scientific notation?</h3>

A number in scientific notation is given by:

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In this problem, the amount is of 67 ns.

Each ns has 10^{-9} seconds, hence:

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We want the base between 1 and 10(exclusive), hence, we move the decimal digit one digit to the left and add one to the exponent, and the representation is:

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You can learn more about scientific notation at brainly.com/question/16394306

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