Multiple choice

If 13 = 13w/(1-w) ,then (2w)2 =

  1. 1/4

  2. 1/2

  3. 1

  4. 2

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Starting with 13 = 13w/(1-w). Divide both sides by 13: 1 = w/(1-w). Multiply both sides by (1-w): 1-w = w. Add w to both sides: 1 = 2w, so w = 1/2. Now calculate (2w)² = (2 × 1/2)² = 1² = 1.

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