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26 votes
26 votes
Solve similar triangles (advanced)

Solve similar triangles (advanced)-example-1
User David Hedlund
by
2.7k points

2 Answers

21 votes
21 votes

Answer:

x = 12

Explanation:

ABC ~ ADE

AB/AD = BC/DE

10/20 = 6/x

x = 20 x 6 ÷ 10

x = 12

User Saurabh Saxena
by
2.8k points
23 votes
23 votes

Answer:

12 =x

Explanation:

We can use proportions to solve

6 x

---- = -------

10 10+10

Using cross products

6 ( 10+10) = x*10

6*20 = 10x

120 = 10x

Divide by 10

120/10 = x

12 =x

User Vladimir Protsenko
by
3.1k points