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Mathematics 16 Online
OpenStudy (anonymous):

Circles M and K are congruent. QR is congruent to LN and OP is congruent to VW. Find x and y.

OpenStudy (anonymous):

hartnn (hartnn):

QR =LN 8 = 3x+4y

hartnn (hartnn):

OP =VW 5y+13 = 2x

hartnn (hartnn):

can you try to solve those 2 equations simultaneously ?

OpenStudy (anonymous):

This is what I get: (0,-13/5) (1, -11/5)

OpenStudy (anonymous):

from the second equation

hartnn (hartnn):

you know method of elimination ? or substitution?

OpenStudy (anonymous):

elimination :)

hartnn (hartnn):

3x+4y =8 2x -5y =13 Multiply 1st equation by5 and 2nd equation by 4

OpenStudy (anonymous):

15x+20y=45 8x-20y=52

hartnn (hartnn):

8*5 =...

OpenStudy (anonymous):

40 sorry!!!

hartnn (hartnn):

no problem :) 15x+20y=40 8x-20y=52 now add these two equations! and see that 'y' gets eliminated magically!

OpenStudy (anonymous):

y=-1 x=4??

hartnn (hartnn):

correct! :) good work

OpenStudy (anonymous):

THANKYOUUU! would you PLEASE help me with another one :)??

hartnn (hartnn):

sure

OpenStudy (anonymous):

thankyouu

OpenStudy (anonymous):

Circles M and K are congruent. QR is congruent to LN and OP is congruent to VW. Find x and y.

hartnn (hartnn):

could u set up the equations ?

OpenStudy (anonymous):

y=2x-3 y=x-1?

hartnn (hartnn):

good!

OpenStudy (anonymous):

which would lead to x=2 and y=1?

hartnn (hartnn):

correct :)

OpenStudy (anonymous):

:O thankyouuu!! but this one is different would you please explain it to me?

OpenStudy (anonymous):

Find mBC if Angle A is equal to 18° and mDC measures 48°

hartnn (hartnn):

i'm not sure about that sorry, can you please ask it as a new question ? others will surely hep you :)

OpenStudy (anonymous):

I will thankyouu!!

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