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Mathematics 18 Online
OpenStudy (anonymous):

***CHECK***

OpenStudy (anonymous):

OpenStudy (anonymous):

@Michele_Laino

OpenStudy (anonymous):

D

OpenStudy (anonymous):

Its D. the square root of 80 is 8.9442719...

OpenStudy (anonymous):

Thx! c:

OpenStudy (anonymous):

an irrational number is any real number that cannot be expressed as a ratio of integers

OpenStudy (michele_laino):

hint: 64=8*8--->perfect square 256=16*16---> perfect square 100=10*10--->perfect square 80=16*5--->it is not a perfect square

OpenStudy (anonymous):

Thx! c:

OpenStudy (michele_laino):

So, what is the right option?

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