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samanthaurso1
01.09.2019 •
Mathematics
30 !
find the value of x.
(note: the line passing through the center of the circle is a diameter.)
115
117
121
130
Solved
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Ответ:
115
Step-by-step explanation:
The measure of x is half the sum of the intercepted arcs. The arc on the left is a semicircle, so 180°.
The arc on the right is the difference between 180° and the two arcs shown, 60° and 70°, so is 180° -60° -70° = 50°.
Then half the sum of the intercepted arcs is ...
x° = (180° +50°)/2 = 230°/2 = 115°
x = 115
Ответ: