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OpenStudy (shaleiah):
@wolf1728
OpenStudy (shaleiah):
@rebeccaxhawaii
OpenStudy (photon336):
pretty sure you can set 2x-3 = 18 becasue I think that the two sides are congruent.
OpenStudy (shaleiah):
@Photon336 10.5?
OpenStudy (shaleiah):
@kittiwitti1
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OpenStudy (daniel.ohearn1):
Now what you can say is that 2x-3/ y will equal 18 /2y
since you're dealing with similar triangles
OpenStudy (daniel.ohearn1):
You can solve that for x then?
OpenStudy (shaleiah):
10.5?
OpenStudy (daniel.ohearn1):
not what I'm getting
OpenStudy (daniel.ohearn1):
Do you see how you can use ratios?
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OpenStudy (shaleiah):
yeah...
OpenStudy (daniel.ohearn1):
Clearly 2x-3 doesn't equal 18
OpenStudy (daniel.ohearn1):
The lines indicate that those side lengths are approximately equal to each other
OpenStudy (daniel.ohearn1):
Use the equation that I gave you, can you solve for x ?
OpenStudy (shaleiah):
Yes, 3.
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OpenStudy (daniel.ohearn1):
It's basically saying that 2x- 3 is to the bottom side length of that triangle as 18 is to the bottom length of the larger triangle whose side length will be 2y because you're dealing with congruencies.
OpenStudy (shaleiah):
Okay
OpenStudy (daniel.ohearn1):
The answer will not be 3 . Here's a hint
Setup the situation as an equation
(2x-3) / y = 18 / 2y
We can then multiply each side of the equation by y and the equation will remain true..
OpenStudy (shaleiah):
6
OpenStudy (daniel.ohearn1):
Yes, that's it
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OpenStudy (shaleiah):
I forgot the y sorry.
OpenStudy (shaleiah):
So the value is:
x=6
OpenStudy (daniel.ohearn1):
That's alright, that y is something that could have been any variable, it's just some number representing the other side of triangle.
OpenStudy (shaleiah):
Thank you so much for your help and patience!
I have given you a medal :)