212620 212620
  • 01-08-2018
  • Mathematics
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Fill in the green box please give me the full answer if possible

Fill in the green box please give me the full answer if possible class=

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choixongdong
choixongdong choixongdong
  • 01-08-2018

Similar triangles

So

x/ 4 = (4+9)/x

Cross multiply

x^2 = 4 * 13

x^2 = √(4 * 13)

x = 2√13

Hope it helps.

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