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Mathematics 15 Online
m4nt1c0r3:

If mLM = (8x - 56) and mNP = (5x + 22), find mLP.

m4nt1c0r3:

mhanifa:

Sum of all 4 arcs is full circle which is 360 deg, can you go from there to set equation?

m4nt1c0r3:

So.. \[360 = 8x-56+5x+22+39+mLP\]

mhanifa:

Sorry, you need to consider first that the two larger arcs are of same measure. Because their perpendicular bisectors are of same length (as indicated in the picture). Set the equation and solve for x

mhanifa:

mLM and mMP are same

m4nt1c0r3:

So... \[8x-56=5x+22\]\[3x=78\]\[x=26\]

mhanifa:

Good, now you can go the the first equation and find the missing measure

m4nt1c0r3:

@m4nt1c0r3 wrote:
So.. \[360 = 8x-56+5x+22+39+mLP\]
So we would put x into this equation and solve for LP?

mhanifa:

Yes, correct

m4nt1c0r3:

so LP would be 17?

mhanifa:

Yes, this is the answer

m4nt1c0r3:

Thanks :)

mhanifa:

You are welcome!

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