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anonymous
 one year ago
Given that: BC=4 BD=9 DE=9 AB=x What is the value of x?
(its a triangle)
anonymous
 one year ago
Given that: BC=4 BD=9 DE=9 AB=x What is the value of x? (its a triangle)

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Peaches15 @ganeshie8 @Crissy15 plz

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Peaches15 @ganeshie8 @Crissy15 plz

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@crissy15 sorry didnt know

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0https://www.khanacademy.org/mission/algebrabasics/task/6258061099532288

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1439401165183:dw

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1how many triangles do you see above ?

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1Notice that those two triangles have same angles

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1so they are similar, you can setup an useful proportion to solve the unknown

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1dw:1439401493066:dw

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.1\[\large \dfrac{x}{4} = \dfrac{x+9}{9}\] cross multiply and solve \(x\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[x=\frac{ 36 }{ 5 }\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0and in decimal is 7.2
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