courtj17 courtj17

17-07-2016
Mathematics

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Find the value of x which ABCD must be a parallellogram?
x =

Find the value of x which ABCD must be a parallellogram x class=

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dalendrk dalendrk

17-07-2016

[tex]ABCD\ is\ parallelogram\ then\ :\\\\\underbrace{15x+2=9x+20}_{alternate\ angles}\ \ \ |subtract\ 2\ from\ both\ sides\\\\15x=9x+18\ \ \ \ |subtract\ 9x\ from\ both\ sides\\\\6x=18\ \ \ \ |divide\ both\ sides\ by\ 6\\\\\boxed{x=3}[/tex]

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