Question

Find the distance from (7, 4) and (-1,-4) A. 11.31 B. 8 C. 10.42 D. 9.76

Answer 1

Answer:

A

Step-by-step explanation:

Calculate the distance using the distance formula

d = $\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2 }$

with (x₁, y₁ ) = (7, 4 ) and (x₂, y₂ ) = (- 1, - 4 )

d = $\sqrt{(-4-4)^2+(-1-7)^2}$

  = $\sqrt{(-8)^2+(-8)^2}$

  = $\sqrt{64+64}$

  = $\sqrt{128}$

  ≈ 11.31 ( to 2 dec. places )