heygirlhey12317 heygirlhey12317
  • 17-02-2021
  • Mathematics
contestada

i need some help please

i need some help please class=

Respuesta :

timo86
timo86 timo86
  • 17-02-2021

Answer:

3[tex]\sqrt{5}[/tex]

Step-by-step explanation:

View the distance as a hypotenuse of a triangle ΔABC (∠C = 90°).

Use Pythagorean theorem:

AB = y1 - y2 = 9 - 6 = 3

AC = x1 - x2 = 4 - (-2) = 6

Now calculate BC which is also the distance needed:

[tex]BC^{2} =AC^{2} +AB^{2}[/tex]

[tex]BC^{2}[/tex] = [tex]6^{2} + 3^{2}[/tex] = 45

BC = [tex]\sqrt{45}[/tex] = [tex]\sqrt{3 * 3 * 5}[/tex] (BC > 0)

BC = 3[tex]\sqrt{5}[/tex]

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