coolmangman091 coolmangman091

11-02-2019
Mathematics

contestada

What is the value of x?

What is the value of x class=

Respuesta :

orangefox1222 orangefox1222

30-09-2019

Answer:

Step-by-step explanation:

The top triangle is similar to the whole triangle because of AAA

Then we know that the corresponding sides are similar

9/81=(3x-20)/(3x-20+56)

1/9=(3x-20)/(3x+36)

cross multiply

9(3x-20)=3x+36

27x-180=3x+36

24x=216

x=9

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