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Mathematics 8 Online
OpenStudy (anonymous):

Find the value of x.

OpenStudy (anonymous):

OpenStudy (jdoe0001):

what's the sum of the internal angles in a triangle?

OpenStudy (anonymous):

@jdoe0001 180?

OpenStudy (jdoe0001):

so.... notice the 90 degrees down below... .so if that angle down there is 90 degrees that means that the other 2 have to sum up to 90 degrees too, because 90 + 90 = 180 total so the other 2 angles, that is 2x and x+15 will add up to 180, so \(\bf 2x+(x+15) = 180\) solve for "x" to find what "x" is

OpenStudy (anonymous):

@jdoe0001 so does x = 55?

OpenStudy (jdoe0001):

yeap

OpenStudy (anonymous):

@jdoe0001 thank you :)

OpenStudy (jdoe0001):

yw

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