Answer:
19.4
Explanation:
The distance between the x coordinates of -4 and 15 would be 19 and the distance between the y coordinates of 2 and 6 would be 4. We can use these to draw a right triangle. The legs would be 19 and 4. We would use the Pythagorean Theorem to find the hypotenuse.
+
=
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+
=
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361 + 16 =
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377 =
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=

19.4 ≈ c That is our answer rounded to the nearest tenth