Answer
1.4
Work Step by Step
use the distance formula
$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$
substitute
$d=\sqrt{(0-(-1))^2+(4-5)^2}$
simplify in parentheses
$d=\sqrt{(1)^2+(-1)^2}$
$d=\sqrt{1+1}$
$d=\sqrt{2}$
$d=1.4$
Geometry: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281159
ISBN 13:
978-0-13328-115-6
Chapter 1 - Tools of Geometry - Chapter Review - Page 74: 30
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