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#1 2010-03-25 08:23:11
- Spanky
- Member
- Registered: 2010-02-24
- Posts: 62
Inverse Variation
Z varies jointly as X and Y, and Z is 12 when X is 6 and Y is 4. Find Z when X is 8 and Y is 10.
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#2 2010-03-25 13:47:32
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Inverse Variation
Hi Spanky;
Z= k*XY
12 = k*6*4
12 = 24 k
k = 1 / 2 So
Find Z when X is 8 and Y is 10.
I have solved for k for you can you now find Z? Give it a try.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#3 2010-03-26 04:16:26
- Spanky
- Member
- Registered: 2010-02-24
- Posts: 62
Re: Inverse Variation
Thank you! I get it now.
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