Using a number line, what whole number and rational number to the nearest half is 105−−−√

between?

1 answer

To determine the whole number and the rational number to the nearest half that \(\sqrt{105}\) is between, we first need to calculate \(\sqrt{105}\).

Calculating \(\sqrt{105}\):

  1. Find the approximate square root:

    • We know that \(10^2 = 100\) and \(11^2 = 121\). Thus, \(\sqrt{105}\) must be between 10 and 11.
  2. To get a more precise estimate, we can try the midpoint:

    • \(10.2^2 = 104.04\) (which is less than 105)
    • \(10.3^2 = 106.09\) (which is more than 105)

    This shows that \(10.2 < \sqrt{105} < 10.3\).

For a more fine-tuned approximation, we can compute \(\sqrt{105}\) using a calculator, which gives approximately:

\[ \sqrt{105} \approx 10.246 \]

Now we want to find the whole number and the rational number to the nearest half that \(\sqrt{105}\) is between.

  1. The whole number below \(\sqrt{105} \approx 10.246\) is 10.
  2. The whole number above is 11.

Now consider the nearest half:

  • The nearest half to \(10.246\) is \(10.5\).

In summary: \(\sqrt{105}\) is between the whole numbers \(10\) and \(11\) and the rational number to the nearest half is \(10.5\).

Thus, we have:

  • Whole number: \(10\)
  • Rational number to the nearest half: \(10.5\)