How do you find the distance between (8,-5), (-1,-3)?

Question

↳Redirected from "Can mixtures be separated by chromatography?"

5998 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-05-30T13:06:24

See a solution process below:

The formula for calculating the distance between two points is:

#d = sqrt((color(red)(x_2) - color(blue)(x_1))^2 + (color(red)(y_2) - color(blue)(y_1))^2)#

Substituting the values from the points in the problem gives:

#d = sqrt((color(red)(-1) - color(blue)(8))^2 + (color(red)(-3) - color(blue)(-5))^2)#

#d = sqrt((color(red)(-1) - color(blue)(8))^2 + (color(red)(-3) + color(blue)(5))^2)#

#d = sqrt((-9)^2 + (2)^2)#

#d = sqrt(81 + 4)#

#d = sqrt(85)#

Or

#d = 9.220# rounded to the nearest thousandth