Show an example of a rational number that is between 10−−√ and 11−−√ .(1 point)

Responses

3.1
3.1

103
Start Fraction 10 over 3 end fraction

3.4
3.4

165

7 answers

To find a rational number between \( \sqrt{10} \) and \( \sqrt{11} \), we first need to approximate these square roots.

  1. \( \sqrt{10} \) is approximately 3.162.
  2. \( \sqrt{11} \) is approximately 3.317.

Now, we can choose a rational number that lies between these two values.

Among the options you provided, let's check them:

  • 3.1: this is less than \( \sqrt{10} \) (3.162).
  • \(\frac{10}{3}\): this is equal to approximately 3.333, which is greater than \( \sqrt{11} \) (3.317).
  • 3.4: this is also greater than \( \sqrt{11} \) (3.317).
  • \(\frac{16}{5}\): which is equal to 3.2, and it does lie between \( \sqrt{10} \) and \( \sqrt{11} \).

Since none of the provided options represent a rational number between \( \sqrt{10} \) and \( \sqrt{11} \), the rational number \( \frac{16}{5} \) is a correct example.

However, from the choices you gave, if none are correct and assuming the fourth option wasn’t included, the best choice based on standard fractions would be another option like 3.2 or any fraction such as \( \frac{32}{10} \) or \( \frac{16}{5} \). Please review the provided options.

Show an example of a rational number that is between 10−−√ and 11−−√ .(1 point)
Responses

3.1
3.1

10/3
Start Fraction 10 over 3 end fraction

3.4
3.4

16/5

To find a rational number that is between \( \sqrt{10} \) and \( \sqrt{11} \), we first need to approximately evaluate these square roots:

  • \( \sqrt{10} \approx 3.162 \)
  • \( \sqrt{11} \approx 3.317 \)

Now, let's evaluate the provided options:

  1. 3.1: This is less than \( \sqrt{10} \) (3.162).
  2. \(\frac{10}{3}\) or \( 3.333... \): This is greater than \( \sqrt{11} \) (3.317).
  3. 3.4: This is also greater than \( \sqrt{11} \) (3.317).
  4. \(\frac{16}{5}\) or \( 3.2 \): This is between \( \sqrt{10} \) (approximately 3.162) and \( \sqrt{11} \) (approximately 3.317).

The correct choice from the provided options that represents a rational number between \( \sqrt{10} \) and \( \sqrt{11} \) is:

\(\frac{16}{5}\) (which is 3.2).

Which irrational number is between 14−−√ and 18−−√ ?(1 point)
Responses

10−−√
start root 10 end root

13−−√
start root 13 end root

19−−√
start root 19 end root

15−−√

To find an irrational number that is between \( \sqrt{14} \) and \( \sqrt{18} \), we first approximate these square roots:

  1. \( \sqrt{14} \) is approximately 3.742.
  2. \( \sqrt{18} \) is approximately 4.243.

Now we can evaluate the provided options:

  1. \( \sqrt{10} \): approximately 3.162, which is less than \( \sqrt{14} \).
  2. \( \sqrt{13} \): approximately 3.606, which is also less than \( \sqrt{14} \).
  3. \( \sqrt{19} \): approximately 4.359, which is greater than \( \sqrt{18} \).
  4. \( \sqrt{15} \): approximately 3.873, which lies between \( \sqrt{14} \) (3.742) and \( \sqrt{18} \) (4.243).

The correct choice from the provided options that is an irrational number between \( \sqrt{14} \) and \( \sqrt{18} \) is:

\( \sqrt{15} \).

How many irrational numbers are there between 11−−√ and 17−−√

To determine how many irrational numbers lie between \( \sqrt{11} \) and \( \sqrt{17} \), we first approximate these square roots:

  • \( \sqrt{11} \) is approximately 3.317.
  • \( \sqrt{17} \) is approximately 4.123.

Now, any interval between two real numbers (in this case, approximately 3.317 and approximately 4.123) contains infinitely many irrational numbers.

This is due to the density of irrational numbers in the real number system; between any two distinct real numbers (whether they are rational or irrational), there are infinitely many irrational numbers.

Thus, there are infinitely many irrational numbers between \( \sqrt{11} \) and \( \sqrt{17} \).

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