Question

Please i need help for this, i also need steps

Answer 1

Check the picture below.

`\cfrac{12}{8}=\cfrac{9}{d}\implies \cfrac{3}{2}=\cfrac{9}{d}\implies 3d=18\implies d=\cfrac{18}{3}\implies \boxed{d=6} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{12^3}{8^3}=\cfrac{A}{160}\implies \cfrac{1728}{512}=\cfrac{A}{160}\implies \cfrac{27}{8}=\cfrac{A}{160} \\\\\\ 4320=8A\implies \cfrac{4320}{8}=A\implies \boxed{540=A}`