Question

Calcule
a
distância
entre
os
pontos:
* A (1,9) e B(2,8)

Answer 1

$\sf d_{AB}=\sqrt{(x_B-x_A)^2+(y_B-y_A)^2}$

$\sf d_{AB}=\sqrt{(2-1)^2+(8-9)^2}$

$\sf d_{AB}=\sqrt{(1)^2+(-1)^2}$

$\sf d_{AB}=\sqrt{1+1}$

$\boxed{\boxed{\sf d_{AB}=\sqrt{2}}}$

Answer 2

Resposta:

$\textsf{Leia abaixo}$

Explicação passo a passo:

$\sf A(1,9) \Leftrightarrow B(2,8)$

$\sf d_{AB} = \sqrt{(x_A - x_B)^2 + (y_A - y_B)^2}$

$\sf d_{AB} = \sqrt{(1-2)^2 + (9-8)^2}$

$\sf d_{AB} = \sqrt{(-1)^2 + (1)^2}$

$\sf d_{AB} = \sqrt{1 + 1}$

$\boxed{\boxed{\sf d_{AB} = \sqrt{2}}}$