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Asivrs
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An engineer wanted to approximate the width, in feet of a river. she placed markers at point A and point B to represent the average width of the river. She also placed 3 other markers along the riverbank and measured the distances shown in the diagram below.
Based on this diagram, what was the width of the river, in feet, from point A to point B?
 2 years ago
 2 years ago
Asivrs Group Title
An engineer wanted to approximate the width, in feet of a river. she placed markers at point A and point B to represent the average width of the river. She also placed 3 other markers along the riverbank and measured the distances shown in the diagram below. Based on this diagram, what was the width of the river, in feet, from point A to point B?
 2 years ago
 2 years ago

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Asivrs Group TitleBest ResponseYou've already chosen the best response.0
dw:1337276808827:dw
 2 years ago

atlas Group TitleBest ResponseYou've already chosen the best response.0
Use similarity of triangles
 2 years ago

atlas Group TitleBest ResponseYou've already chosen the best response.0
The two triangles that u see are similar and hence their corresponding sides will have the same ration
 2 years ago

Asivrs Group TitleBest ResponseYou've already chosen the best response.0
so..i should put 62 over 93 and 49 over X?
 2 years ago

Asivrs Group TitleBest ResponseYou've already chosen the best response.0
find the ratio after that then... times it by 2?
 2 years ago

atlas Group TitleBest ResponseYou've already chosen the best response.0
Label the two triangles and see which angles are equal................The sides corresponding to equal angles are proportionaldw:1337277341870:dw here AB:AC = BE:CD
 2 years ago

atlas Group TitleBest ResponseYou've already chosen the best response.0
You do not know AB............So let it be x
 2 years ago

Asivrs Group TitleBest ResponseYou've already chosen the best response.0
but you dont know AD either.. right?
 2 years ago

atlas Group TitleBest ResponseYou've already chosen the best response.0
U do not need AD................The equation AB:AC = BE:CD can be written as x/(x+49)= 62/93 Solve for x (Remember x = AB)
 2 years ago

atlas Group TitleBest ResponseYou've already chosen the best response.0
dw:1337277608429:dw
 2 years ago

Asivrs Group TitleBest ResponseYou've already chosen the best response.0
\[\left[\begin{matrix}x & 62\\ x+49 & 93\end{matrix}\right]\]
 2 years ago

Asivrs Group TitleBest ResponseYou've already chosen the best response.0
like okay.. x + 49 = AC,, so... ugh sorry i dont get math easily
 2 years ago

Asivrs Group TitleBest ResponseYou've already chosen the best response.0
is there like a formula you can give me to help me out? i know if i see what i need to do i'll understand.
 2 years ago
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