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steposvetlana [31]
2 years ago
7

The polygons are similar. Find the value of x.

Mathematics
2 answers:
dmitriy555 [2]2 years ago
7 0

Answer:

x = 30

Step-by-step explanation:

 12 : 20 = 18 : x

⇒ 12/20 = 18/x

⇒ 12x = 18 · 20

⇒ 12x = 360

⇒ x = 360 ÷ 12

⇒ x = 30

Ivahew [28]2 years ago
7 0

\\ \rm\Rrightarrow \dfrac{21}{x}=\dfrac{14}{20}

\\ \rm\Rrightarrow \dfrac{21}{x}=\dfrac{7}{10}

\\ \rm\Rrightarrow 7x=210

\\ \rm\Rrightarrow x=30

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