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nadezda [96]
3 years ago
7

Find the value of x. The diagram is not to scale.

Mathematics
2 answers:
tester [92]3 years ago
7 0
X=15 its simple since there's base angles and straight angle
icang [17]3 years ago
6 0
-----------------------------------------------------------------------------
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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