anonymous
  • anonymous
Which number is irrational? Select one: a. √169 b. √144 c. √81 d. √156
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
What's a rational number?
anonymous
  • anonymous
A rational number is a number that can be expressed as a fraction or ratio (rational). The numerator and the denominator of the fraction are both integers.
anonymous
  • anonymous
A rational number can also be a whole number.

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anonymous
  • anonymous
so the square root of 169 is 13, correct?
anonymous
  • anonymous
The number 13 is a rational number because it's a whole number.
anonymous
  • anonymous
yes 13 is right for 169
anonymous
  • anonymous
That means option A is not irrational, thus not the correct answer.
anonymous
  • anonymous
Option B is not irrational as well because that will give you 12. So is option C. That also gives you a whole number of 9.
anonymous
  • anonymous
Tell me what option D would give me? @Yolo4mecuite
anonymous
  • anonymous
option D is 12.5 for squr 156
anonymous
  • anonymous
Yeah ^^^^
anonymous
  • anonymous
So D is rational
anonymous
  • anonymous
no we are looking for irrational
anonymous
  • anonymous
Yes sorry
anonymous
  • anonymous
12.5 is not s whole number so it is irrational
anonymous
  • anonymous
I knew it was D, was just trying to teach
anonymous
  • anonymous
Oh ok Thank you! :)
anonymous
  • anonymous
hope I helped not hindered here.
anonymous
  • anonymous
12.5 is a rational number. That's a fraction with integers. The square root of 156 does not contain recurring numbers which means it's irrational.
anonymous
  • anonymous
yep you are right :)
anonymous
  • anonymous
good job..
SWAG
  • SWAG
Nice Work!

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