anonymous
  • anonymous
HElPOOOOO!!!!!!!!
Mathematics
  • Stacey Warren - Expert brainly.com
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katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
Given the two expressions shown below: square root of 64 plus square root of 5 square root of 64 plus square root of 4 Which statement best describes the two expressions? Both are rational. Both are irrational. A is rational, but B is irrational. A is irrational, but B is rational.
anonymous
  • anonymous
\[\sqrt{64}+\sqrt{5}\]
anonymous
  • anonymous
\[\sqrt{64}+\sqrt{4}\]

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anonymous
  • anonymous
@Directrix , @Nnesha , @Vocaloid
Directrix
  • Directrix
Question: What does the square root of 64 equal?
anonymous
  • anonymous
8 ?
Directrix
  • Directrix
Yes. What is square root of 4
anonymous
  • anonymous
2 ?
anonymous
  • anonymous
So that means that B is rational then right?
Directrix
  • Directrix
The numbers 8 and 2 are rational because they can be expressed as fractions: 8/1 and 2/1. Irrational numbers cannot.
Directrix
  • Directrix
Question: Is the square root of 5 a rational number?
anonymous
  • anonymous
Not at all no.
Directrix
  • Directrix
Good. We are ready to answer the question. A) square root of 64 plus square root of 5 = 8 + square root of 5 The whole thing is irrational if any part of the sum is irrational. B) square root of 64 plus square root of 4 = 8 + 2 = 10. 10 is a rational number because it can be written as the ratio of two integers: 10/1. So, Option B represenets a rational number.
Directrix
  • Directrix
So, what is the final answer to the question
anonymous
  • anonymous
So that means the A is irrational, but B is rational, henceforth it is D right?
Directrix
  • Directrix
Correct: A is irrational, but B is rational.
Directrix
  • Directrix
Question?
anonymous
  • anonymous
Thank you so much, you are absolutely awesome, I wish I had your smarts. Thank you very much!
Directrix
  • Directrix
You are welcome.

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