document.write( "Question 177419: x varies directly as the square of s and inversely as t. How does x change when s is doubled? When both s and t are doubled? \n" ); document.write( "

Algebra.Com's Answer #132445 by Mathtut(3670) $\"\"$ $\"About$

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x varies directly as the square of s and inversely as t. How does x change when s is doubled? When both s and t are doubled?
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\n" ); document.write( "so $\"xt%2Fs%5E2=k\"$ ---> $\"x=s%5E2k%2Ft\"$
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\n" ); document.write( "if s is doubled--->x= $\"%282s%29%5E2k%2Ft\"$ ---> $\"4%28s%5E2k%2Ft%29\"$ meaning x will quadruple
\n" ); document.write( "......................................................in size
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\n" ); document.write( "if s and t are doubled---> $\"x=%282s%5E2%29k%2F2t\"$ ---> $\"x=4s%5E2k%2F2t\"$ --->
\n" ); document.write( " $\"2%28s%5E2k%2Ft%29\"$ meaning x will double in size.
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