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Mathematics 14 Online
OpenStudy (artchaos):

Solve for y. A.10 B.12 C.15 D.18

OpenStudy (artchaos):

Help :)

OpenStudy (lhgraythorn):

AC is a straight line, and it is 180 degrees. DB is it's perpendicular bisector, i.e. it cut the two sides in half and makes each angle congruent. that red box means that an angle is 90 degrees. You need x, so 3x=90 will give you x. plug x in to the other equation, and solve for y. |dw:1465943835761:dw|

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