Mathematics, 10.07.2019 02:30 Adolfosbaby
Yvaries jointly as a and b and inversely as the square root of c y=96 when a=8 b=6 c=16 find y when a=7 b=5 c=25
Answers: 2
![\bf \qquad \qquad \textit{compound proportional variation} \\\\ \begin{array}{llll} \textit{\underline{y} varies directly with \underline{x}}\\ \textit{and inversely with \underline{z}} \end{array}\implies y=\cfrac{kx}{z}\impliedby \begin{array}{llll} k=constant\ of\\ \qquad variation \end{array} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \stackrel{\textit{\underline{y} varies jointly as \underline{a} and \underline{b} and inversely as }\sqrt{c}}{y=\cfrac{kab}{\sqrt{c}}}](/tpl/images/0071/6322/83b5e.png)
= 
= 8
= 8 × 7 = 56
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Yvaries jointly as a and b and inversely as the square root of c y=96 when a=8 b=6 c=16 find y when...
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