Posted by **jezzaD.** on Friday, November 30, 2012 at 5:48am.

1. R varies jointly as S and t. If R=1/6,S=1/8 and T=3, find R when S=2 and T=11.

formula: R=KST

2. U varies jointly as L and H and inversely a S. If U=1.8, L=6.4, H=1.5 and S=-7.2, find U when L=4.3, H=5.1 and S=-2.2.

formula: U=KLH/S

Please Help!!

- Math-II ( Joint and Combined Variation) -
**Steve**, Friday, November 30, 2012 at 10:46am
1.

R=KST, so K = R/ST = (1/6)/[(1/8)(3)] = 4/9

R = 4/9 ST = (4/9)(2)(11) = 88/9

2.

U=KLH/S, so K = US/LH = (1.8)(-7.2)/[(6.4)(1.5)] = -1.35

U = -1.35(4.3)(5.1)/-2.2 = 13.457

- Math-II ( Joint and Combined Variation) -
**@Steve**, Sunday, December 2, 2012 at 7:29am
thanks! so my answer in number 1 was correct, number 2 is still not answered but ya help me. again, thanks to ur help!!

JezzaD.

- Math-II ( Joint and Combined Variation) -
**Anonymous**, Monday, January 27, 2014 at 9:59pm
ass

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