The sum is \( S = raca1 - r = rac41 - rac12 = rac4rac12 = 8 \). - AMAZONAWS

📅 March 6, 2026 👤 scraface

Mar 06, 2026

$The sum is \( S = rac{a}{1 - r} = rac{4}{1 - rac{1}{2}} = rac{4}{ rac{1}{2}} = 8 \).$