ash224422 ash224422
  • 22-07-2019
  • Mathematics
contestada

if A= (-1,3) and B=(11,-8) what is the length of ab

Respuesta :

jimrgrant1 jimrgrant1
  • 22-07-2019

Answer:

16.3 units ( to 1 dec. place )

Step-by-step explanation:

Using the distance formula

d = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = A(- 1, 3) and (x₂, y₂ ) = B(11, - 8)

AB = [tex]\sqrt{(11+1)^2+(-8-3)^2}[/tex]

     = [tex]\sqrt{12^2+(-11)^2}[/tex]

     = [tex]\sqrt{144+121}[/tex]

     = [tex]\sqrt{265}[/tex] ≈ 16.3 ( to 1 dec. place )

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