# Chapter 12 Sequences and Series - 12.1 Define and Use Sequences and Series - 12.1 Exercises - Mixed Review - Page 800: 81

$$\sqrt{34}$$

#### Work Step by Step

Using the distance formula, we find: $$\sqrt{\left(1-\left(-4\right)\right)^2+\left(9-6\right)^2}\\ \sqrt{34}$$

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