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Mathematics 20 Online
OpenStudy (anonymous):

Question is in comments

OpenStudy (anonymous):

|dw:1358058014261:dw|

OpenStudy (anonymous):

Find the values of a and b

OpenStudy (agent0smith):

I'm guessing the drawing should have a bit more info, like so: |dw:1358058101934:dw| ie the top is parallel with the bottom. Now, angle a + 42 = 180, and angle b + 108 = 180.

OpenStudy (anonymous):

no I drew it like how it was shown... and okay

OpenStudy (anonymous):

I think @agent0smith is right, we need more info

OpenStudy (anonymous):

wells thats exactly what it looks like, the way i draw it i swear

OpenStudy (agent0smith):

@UmmmHELP the way it is drawn, I don't think it's possible to find a and b - all you can say is that: \[a + b + 42 + 108 = 360\]But this isn't enough info to find a and b. Since you aren't given any side lengths. The drawing looks like it has parallel lines, so maybe you're meant to assume they're parallel.

OpenStudy (anonymous):

I dont know cause Im looking at it now and it doesnt have the lines...so u really dont know sorry haha thats just all they gave me

OpenStudy (anonymous):

I mean I really dont know sorry

OpenStudy (agent0smith):

Well if they aren't parallel lines, there's no way to find a and b, you only know that: \[a+b = 210\]and you can't solve this for a and b. Assume they're parallel and you can find them as i showed above.

OpenStudy (anonymous):

okay

OpenStudy (agent0smith):

They look parallel in the drawing you gave, so you're probably safe to assume they are

OpenStudy (agent0smith):

Assuming they're parallel, do you know how to solve for a and b? \[ a + 42 = 180 \] \[b + 108 = 180 \]

OpenStudy (anonymous):

sorry I wasnt even on the site for a while... Um I dont know..isnt it something with subtracting

OpenStudy (agent0smith):

Yes, in the first equation, you'd subtract 42 from both sides to find a. You can find b in a similar way.

OpenStudy (anonymous):

subtract 180?

OpenStudy (anonymous):

I got..thanks

OpenStudy (agent0smith):

To find b, you'd subtract 108 from both sides of the equation b + 108 = 180, but it sounds like you got it! :)

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