anonymous
  • anonymous
Classify the numbers as rational or irrational. negative 4/5 square root of two 2.5 0.44444444... square root of 16 @Hero @dan815 @nincompoop
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
please help me someone
welshfella
  • welshfella
all rational number can be expressed as a fraction a/b eg 1/2 , 3/4 . 6 ( = 6/1) are all rational
welshfella
  • welshfella
so how about -4/5 ?

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welshfella
  • welshfella
- thay can be negative fractions as well as posituve
welshfella
  • welshfella
is -4/5 a fraction?
anonymous
  • anonymous
so negative 4/5 and 2.5 and the square root of 16 are all rational
welshfella
  • welshfella
right
welshfella
  • welshfella
what about 0.4444... this is 0.4 recurring - meaning it 'goes on forever' but can it be written as a fraction?
anonymous
  • anonymous
no
welshfella
  • welshfella
it can actually 1/9 = 0.11111111.. so 0.44444444... is 4/9 so its rational
anonymous
  • anonymous
that makes more sense
welshfella
  • welshfella
the only one which is irrational is sqrt2
welshfella
  • welshfella
there are many like that , sqrt3, sqrt6, sqrt8 . sqrt 17 and so on
anonymous
  • anonymous
ok thanks
welshfella
  • welshfella
yw
anonymous
  • anonymous
i have another question
welshfella
  • welshfella
ok but i only have 5 minutes
anonymous
  • anonymous
What is the product of 1.7 × 10−13 and 3.5 × 1025? 1.8 × 10^12 2.06 × 10^12 3.5 × 10^12 5.95 × 10^12
anonymous
  • anonymous
What is the product of 1.7 × 10^−13 and 3.5 × 10^25? 1.8 × 10^12 2.06 × 10^12 3.5 × 10^12 5.95 × 10^12
welshfella
  • welshfella
multiply 1.7 by 3.5 then add the exponents 10^-13 * 10^25 = 10^(-13+25) = 10^ ?
welshfella
  • welshfella
gtg
anonymous
  • anonymous
ok bye

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