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Alex
2 years ago
6

I don't know how to solve this

Mathematics
1 answer:
agasfer [191]2 years ago
4 0

Answer:

Hello,

Step-by-step explanation:

using Thalès 's théorem :

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

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

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Answer:

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4 years ago
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