Mathematics: Which of the following is an irrational number? a) 0.78 (there should be a bar above 78) b) (√12)^2 c) √18 d) √169

Which of the following is an irrational number?

Ответ:

manou76

04.01.2022

Mathematics

C. √(18)
This is because it is a repeating decimal number without a pattern in the repetition.

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Ответ:

jasramos004

23.08.2020

Mathematics

$1kb=2^{10}b\\1Mb=2^{10}kb=2^{10}\cdot2^{10}b=2^{20}b\to1b=2^{-20}Mb\\-------------------------\\40,000,000b=4\cdot10^7b=2^2\cdot(2\cdot5)^7b=2^2\cdot2^7\cdot5^7b\\\\=2^9\cdot5^7b=2^9\cdot5^7\cdot2^{-20}Mb=5^7\cdot2^{-11}Mb\approx38.15Mb$

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Which of the following is an irrational number?
a) 0.78 (there should be a bar above 78)
b) (√12)^2
c) √18
d) √169

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