thx553 thx553
  • 01-10-2021
  • Mathematics
contestada

help me plssssss i don’t know how to do this

help me plssssss i dont know how to do this class=

Respuesta :

jimrgrant1 jimrgrant1
  • 01-10-2021

Answer:

AC = [tex]\sqrt{15}[/tex]

Step-by-step explanation:

Assuming you require AC

Using Pythagoras' identity in the right triangle

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides , that is

AC² + BC²= AB²

AC² + 7² = 8²

AC² + 49 = 64 ( subtract 49 from both sides )

AC² = 15 ( take square root of both sides )

AC = [tex]\sqrt{15}[/tex] ≈ 3.87 ( to 2 dec. places )

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