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OpenStudy (surryyy):
In the diagram below, AC is perpendicular to BD. Find x. Answers: 18 27 36 81
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OpenStudy (surryyy):
|dw:1414919467134:dw|
OpenStudy (math&ing001):
AC is perpendicular to BD so the angle between them is 90°. Meaning 3x+9=90.
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