Question

Im a dude and the question is what is the length of the line segment between A(-5,8) and B(7,8)

Answer 1

$\text {Length = } \sqrt{(8-8)^2 +(7+5)^2 } = \sqrt{12^2} = 12$

Answer: 12 units

Answer 2

Find the distance between points A (-5, 8) B (7,8):
d = √(xb - xa)2 + (yb - ya)2 + (zb - za)2 =

= √(7 - (-5))2 + (8 - 8)2 + (0 - 0)2 =

= √122 + 02 + 02 = √144 + 0 + 0 =
= √144
= 12