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I don't know how to solve this
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I don't know how to solve this

I don't know how to solve this-example-1
User Se
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5 votes

Answer:

Hello,

Explanation:

using Thalès 's théorem :


(x)/(x+10) =(4)/(10) \\\\10x=4x+40 \ (cross\ products)\\\\6x=40\\\\x=(20)/(3) \ (simplified\ by\ 2)

x≈6.7 (i don't know what d.p. means , perhaps 1 decimal after the point)

User Pedroteixeira
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