Answer
14.4
Work Step by Step
use the distance formula
$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$
substitute
$d=\sqrt{(5-(-7))^2+(8-0)^2}$
simplify in parentheses
$d=\sqrt{(12)^2+(8)^2}$
$d=\sqrt{144+64}$
$d=\sqrt{208}$
$d=14.4$
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