Find the value of x. The diagram is not to scale.
2 answers:
X=15 its simple since there's base angles and straight angle
----------------------------------------------------------------------------- Isosceles triangle ----------------------------------------------------------------------------- ∠STR = ∠SRT = 5x - 30 ----------------------------------------------------------------------------- Adjacent angles on a straight line is 180° ----------------------------------------------------------------------------- ∠STR + ∠ STU = 180° (5x - 30) + 5x = 180 5x - 30 + 5x = 180 10x - 30 = 180 10x = 180 + 30 10x = 210 x = 21 -----------------------------------------------------------------------------Answer: x = 21 -----------------------------------------------------------------------------
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It can't be C or D. I think it could be A.