NianaH401349 NianaH401349

03-11-2022
Mathematics

contestada

Question 3 of 8
What is the length of CD?
B
15- X
с хр
5
E
20
1
Answer here

Question 3 of 8What is the length of CDB15 Xс хр5E201Answer here class=

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ThalyaM520587 ThalyaM520587

03-11-2022

Explanation

Triangles ABC and CDE are congruent, then:

[tex]\begin{gathered} \frac{15-x}{20}=\frac{x}{5} \\ 5(15-x)=20x \\ 75-5x=20x \\ 75=20x+5x \\ 75=25x \\ \frac{75}{25}=x \\ 3=x \end{gathered}[/tex]

Answer

x=3

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