Answer:
. E is inversely proportional to Z and Z = 4 when E = 6.
2. P varies inversely as Q and Q = 2/3 when P = 1/2.
3.R is inversely proportional to the square of I and I = 25 when R = 100.
4. F varies inversely as the cube root of S and S = 64 when F = 4.
5. Z is inversely proportional to the sum of x and y and the sum of x and y is 10 when Z is 4
6. A varies inversely as the cube of b and b is 1/3 when a is 27