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PLEASE PLEASE HELP!!!
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20 votes
PLEASE PLEASE HELP!!!

PLEASE PLEASE HELP!!!-example-1
User Moby Duck
by
4.2k points

1 Answer

11 votes

Answer:

x = 8

Explanation:

small triangle is similar to larger one

set up a proportion: 9 = x + 4

9+12 x+4+2x

9 = x+ 4 cross-multiply: 9(3x + 4) = 21(x + 4)

21 3x + 4 27x + 36 = 21x + 84

6x + 36 = 84

6x = 48

x = 8

User Bjaxbjax
by
3.8k points
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