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Mathematics 21 Online
OpenStudy (anonymous):

In the diagram, C and D are located such that AB is divided into 3 equal parts. what are the coordinates of C and D. Can some one walk me through this please. I'm not coming up with the right answer.

OpenStudy (anonymous):

OpenStudy (anonymous):

do I find the distance between the two points and divide by 3

OpenStudy (***[isuru]***):

u dont need to find the distance between 2 points

OpenStudy (anonymous):

distance between A and C is \[9\sqrt{2}\]

OpenStudy (***[isuru]***):

use this .. when a line is divided in to the ratio of m:n|dw:1392591481371:dw| coordinates of c is equal to...

OpenStudy (***[isuru]***):

\[( x , y ) = \frac{ mX_{1} +nX_{2} }{ m +n} \ , \ \frac{ mY_{1} + nY_{2} }{ m +n }\]

OpenStudy (***[isuru]***):

in ur question it's like this|dw:1392591720858:dw|

OpenStudy (***[isuru]***):

when u want to find the coordinates of C u can think of this line in this way|dw:1392591817380:dw|

OpenStudy (***[isuru]***):

and u can use the formula i gave u

OpenStudy (***[isuru]***):

when it comes to D|dw:1392591940252:dw|

OpenStudy (***[isuru]***):

so... same goes for D too

OpenStudy (***[isuru]***):

can u do that ?

OpenStudy (anonymous):

im trying now

OpenStudy (anonymous):

C=0,3 D=3,0

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