magicalforlife
magicalforlife magicalforlife
  • 20-12-2018
  • Mathematics
contestada

Please help and show work!!

Please help and show work class=

Respuesta :

gmany
gmany gmany
  • 28-12-2018

A(1, 1), B(7, 1), C(1, 9)

AB = 7 - 1 = 6

AC = 9 - 1 = 8

Use the Pythagorean theorem:

AB² + AC² = BC²

Substitute:

BC² = 6² + 8²

BC² = 36 + 64

BC² = 100 → BC = √100 → BC = 10

The perimeter of ΔABC:

P = 6 + 8 + 10 = 24

Answer: 24 units

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