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[jnney]

Find the ratio if the point C(-9,7) divides the interval A(1,32) and B(-5,17) externally.

Let the ratio be m:n

-9= (1)(n)-(-5)(m)/n-m and 7=(32)(n)-(17)(m)/n-m

-10n-4m=0 and -25n+10m=0


...??????

 

[Aysce]

Try simultaneous equations? And doing maths at this time :L. True dedication.

 

[Drongoski]

Find the ratio if the point C(-9,7) divides the interval A(1,32) and B(-5,17) externally.

Let the ratio be m:n

-9= (1)(n)-(-5)(m)/n-m and 7=(32)(n)-(17)(m)/n-m

-10n-4m=0 and -25n+10m=0


...??????

You were almost there. Your 1st eqn should have ended up: 4m = 10n and not 4m = -10n.

Then straightaway: m:n = 5:2

Note you need solve only 1 eqn; you don't need to find m & n individually - you only need to find their relative value; i.e their ratio.






Edit

Didn't I urge you all not to stay up too late.

 

[Aysce]

Guess my suggestion was a little bit too far off >.<

 

[ohexploitable]

i thought this thread was about something else...

http://upload.wikimedia.org/wikipedia/commons/9/92/Cocaine_lines_2.jpg

 

[LoveHateSchool]

Why are you doing maths at 2AM, whhhhhy?

 

[Alkanes]

why not?

 

[iRuler]

Edit

Didn't I urge you all not to stay up too late.

Most people school students dont really lurk the other sections of this forum, pretty sure most people would've missed it.

 

[SpiralFlex]

Most people school students dont really lurk the other sections of this forum, pretty sure most people would've missed it.

I live here in the Preliminary forum. It's Spiral's secret hide-out.

 

[powlmao]

I live here in the Preliminary forum. It's Spiral's secret hide-out.

*Our

 

[iRuler]

I live here in the Preliminary forum. It's Spiral's secret hide-out.

Spiral is an unknown force who is destroying this place!

nah you're alright

*Our

you're just a stalker... lol

 

[jnney]

You were almost there. Your 1st eqn should have ended up: 4m = 10n and not 4m = -10n.

Then straightaway: m:n = 5:2

Note you need solve only 1 eqn; you don't need to find m & n - you only need to find their relative value; i.e their ratio.






Edit

Didn't I urge you all not to stay up too late.

Thanks