rtroy23
rtroy23
27-04-2016
Mathematics
contestada
The Question is in the file below. (Khan Academy)
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apologiabiology
apologiabiology
27-04-2016
that little squaer angle means right angle or 90 degrees
the black line and the red line cross
therefor the oposte angles are eqal measure
7x=90+x
solve
minus x
6x=90
divide 6
x=15
x=15
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