Seudónimo Seudónimo
  • 26-01-2021
  • Mathematics
contestada

PLEASE HELP

FIND THE LENGTH OF RS.

PLEASE HELP FIND THE LENGTH OF RS class=

Respuesta :

Leora03
Leora03 Leora03
  • 26-01-2021

Answer:

A

Step-by-step explanation:

Distance between 2 points

[tex] = \sqrt{(x1 - x2)^{2} + (y1 - y2)^{2} } [/tex]

☆ (x₁, y₁) is the first coordinate while (x₂, y₂) I'd the second coordinate.

Length of RS

[tex] = \sqrt{ {[ - 1 -( - 4)] }^{2} + (9 - 1)^{2} } \\ = \sqrt{( - 1 + 4)^{2} + 8^{2} } \\ = \sqrt{ {3}^{2} + 64 } \\ = \sqrt{73} \\ = 8.54 \: (3 \: s.f.)[/tex]

Thus, RS is about 8.5 units.

Answer Link
loser4270
loser4270 loser4270
  • 30-01-2021

Answer:

I believe its A. 8.5

Step-by-step explanation:

Answer Link

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