Select the correct answer.

Which expression is equivalent to 10\sqrt{5}
?

A. \sqrt{500}
B. \sqrt{105}
C. \sqrt{50}
D. \sqrt{15}

1 answer

To find which expression is equivalent to \( 10\sqrt{5} \), we can simplify each option and see if any equal \( 10\sqrt{5} \).

  1. Option A: \( \sqrt{500} \) \[ \sqrt{500} = \sqrt{100 \times 5} = \sqrt{100} \times \sqrt{5} = 10\sqrt{5} \]

  2. Option B: \( \sqrt{105} \)

    • Cannot be simplified further to match \( 10\sqrt{5} \).
  3. Option C: \( \sqrt{50} \) \[ \sqrt{50} = \sqrt{25 \times 2} = \sqrt{25} \times \sqrt{2} = 5\sqrt{2} \]

    • This does not equal \( 10\sqrt{5} \).
  4. Option D: \( \sqrt{15} \)

    • This does not simplify to match \( 10\sqrt{5} \).

Based on the calculations, the only expression that is equivalent to \( 10\sqrt{5} \) is:

A. \( \sqrt{500} \).