#### Answer

$$5\sqrt{5}$$

#### Work Step by Step

Using the distance formula, we find:
$$\sqrt{\left(-2-8\right)^2+\left(4-\left(-1\right)\right)^2}\\ \sqrt{125} \\ 5\sqrt{5}$$

Published by
McDougal Littell

ISBN 10:
0618595414

ISBN 13:
978-0-61859-541-9

$$5\sqrt{5}$$

You can help us out by revising, improving and updating this answer.

Update this answerAfter you claim an answer you’ll have **24 hours** to send in a draft. An editor
will review the submission and either publish your submission or provide feedback.