<PRE><B>Question 1197997</B>
13. G is inversely proportional to a^2
9*(-3)^2 = 25a^2
81/25 = a^2
 ± 9/5 = a
E. YOur answer

14.The density (d) of a substance is inversely proportional to the volume (v), of the sample
 If aluminum has a density of 2.71 grams/cm^3, What would be the mass of a 20 cubic centimeter sample?
 2.71 = k/20
{{{2.71(grams/cm^3) *20cm^3 = k}}}}
  54.2grams = k(mass)

</PRE>